Precision Digital Corporation PD6801 User manual

PD6801 Explosion-Proof Loop-Powered

Feet & Inches Level Meter

Instruction Manual

PRECISION DIGITAL CORPORATION

233 South Street • Hopkinton MA 01748 USA

Tel (800) 343-1001 • Fax (508) 655-8990

www.predig.com

•Fully-Approved Explosion-Proof Loop-Powered Meter

•4-20 mA Input with ±0.03% Accuracy

•3.0 Volt Drop (6.0 Volt Drop with Backlight)

•Easy Field Scaling in Engineering Units without Applying an Input

•0.6" (15.2 mm) Feet & Inches Upper Display With 1/8 or 1/16 Resolution

•0.4" (10.2 mm) 7 Alphanumeric Characters Lower Display for Tag, Volume, or Percent

•Display Level in Feet & Inches and Volume, Percent or Decimal Height Simultaneously

•Display Mountable at 0°, 90°, 180°, & 270°

•SafeTouchTM Through-Glass Button Programming

•20-Segment Tank Side Level Indicator Bargraph

•Open Collector Output Assignable to High or Low Alarm

•HART®Protocol Transparent

•Loop or External DC-Powered Backlight Standard

•Operating Temperature Range: -40 to 75°C (-40 to 167°F)

•FM Approved as Explosion-Proof / Dust-Ignition Proof / Flame-Proof

•CSA Certified as Explosion-Proof / Dust-Ignition Proof / Flame-Proof

•ATEX and IECEx Certified as Flame-Proof and Protection by Enclosure

•Conformal Coated PCBs for Dust and Humidity Protection

•Password Protection

•32-Point Linearization

•Wide Viewing Angle

•Flanges for Wall or Pipe Mounting

•Explosion-Proof, IP68, NEMA 4X Die-Cast Aluminum Enclosure

•Two 3/4" NPT Threaded Conduit Openings (One Plug Installed)

•2" U-Bolt Kits Available

•3-Year Warranty

PD6801 Explosion-Proof Loop-Powered Feet & Inches Level Meter

Instruction Manual

Disclaimer

The information contained in this document

is subject to change without notice. Precision

Digital Corporation makes no representations

or warranties with respect to the contents hereof;

and specifically disclaims any implied warranties

of merchantability or fitness for a particular

purpose.

•Read complete instructions prior to installation

and operation of the meter.

•Risk of electric shock or personal injury.

•This product is not recommended for life support

applications or applications where malfunctioning

could result in personal injury or property loss.

Anyone using this product for such applications

does so at his/her own risk. Precision Digital

Corporation shall not be held liable for damages

resulting from such improper use.

•Failure to follow installation guidelines could

result in death or serious injury. Make sure only

qualified personnel perform the installation.

•Never remove the meter cover in explosive

environments when the circuit is live.

•Cover must be fully engaged to meet

flameproof/explosion-proof requirements.

WARNING

Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Limited Warranty

Precision Digital Corporation warrants this

product against defects in material or

workmanship for the specified period under

“Specifications” from the date of shipment from

the factory. Precision Digital’s liability under this

limited warranty shall not exceed the purchase

value, repair, or replacement of the defective unit.

See Warranty Information and Terms &

Conditions on www.predig.com for complete

details.

Introduction

The ProtEX-F&I PD6801 is a rugged, explosion-proof

loop-powered indicator specifically designed for level

applications in hazardous areas or in the harshest

environmental conditions. The meter displays level in

easy to read and understand feet, inches, and

fractions of an inch; and a 20-segment tank level

indicator. The lower display can show a custom unit

or tag, percent full, or a second scale for the 4-20 mA

input used to indicate volume.

The meter derives all of its power from the 4-20 mA

loop. It is programmed using the four SafeTouch

through-glass buttons, without removing the cover,

and can be scaled with or without a calibration signal.

The upper display will read up to 699 ft. – 11 15/16

inches. The alphanumeric volume/tag display will read

up to 9,999,999. The alphanumeric display can also

be programmed to show any combination of numbers

and letters up to seven characters long for use as

engineering units and/or the process identification tag.

The backlight lets you see the display under any

lighting condition and can be powered from either the

4-20 mA loop or from a separate DC power supply.

The enclosure is provided with two threaded conduit

holes and integrated pipe or wall mounting slotted

flanges.

Ordering Information

Model Description

PD6801-0K1

Explosion-Proof Loop-Powered

Feet & Inches Level Meter with

backlight

Accessories

Model Description

PDA0001 3/4" M-NPT to F-M20 Reducer

PDA0002 3/4" M-NPT to 1/2" F-NPT Reducer

PDA1024-01 24 VDC Power Supply for DIN Rail

PDA6846

Steel 2" U-Bolt Kit. All Material: Zinc

Plated Steel; (1) U-Bolt for 2" Pipe with

(2 each) Washers, Lock Washers, and

Nuts.

PDA6846-SS

Stainless Steel 2" U-Bolt Kit. All

Material: Stainless Steel; (1) U-Bolt for

2" Pipe with (2 each) Washers, Lock

Washers, and Nuts.

PDA-SSTAG Custom Stainless Steel Tag (see

website for convenient ordering form)

PD6801 Explosion-Proof Loop-Powered Feet & Inches Level Meter

Instruction Manual

Table of Contents

Introduction......................................................................................................... 2

Ordering Information.......................................................................................... 2

Table of Contents ............................................................................................... 3

Specifications ..................................................................................................... 5

General............................................................................................................ 5

Input ................................................................................................................ 5

Open Collector Output................................................................................... 5

Product Ratings and Approvals.................................................................... 6

Electromagnetic Compatibility...................................................................... 6

Safety Information.......................................................................................... 6

Installation........................................................................................................... 7

Unpacking....................................................................................................... 7

Pre-Installed Conduit Plug ............................................................................ 7

Mounting ......................................................................................................... 7

Dimensions..................................................................................................... 7

Cover Jam Screw ........................................................................................... 8

Connections ................................................................................................... 8

Wiring Diagrams............................................................................................. 9

External Acknowledge Connection .............................................................. 9

Open Collector Output Connections ............................................................ 9

Setup and Programming.................................................................................. 10

Overview ....................................................................................................... 10

SafeTouch Buttons ...................................................................................... 10

SafeTouch Button Operation...................................................................... 10

SafeTouch Button Tips and Troubleshooting............................................. 10

Buttons and Display..................................................................................... 11

Main Menu Display Functions & Messages ............................................... 12

Main Menu..................................................................................................... 12

Setting Up the Meter (SETUP) ....................................................................... 13

Setting Numeric Values ............................................................................. 13

Scaling the Meter (SCaLe).......................................................................... 14

Selecting Inch Fraction Display Mode (FRACTN)......................................... 14

Scaling the Tank Level Indicator (PERCENT)............................................... 14

Configuring the Lower Display (DISPLAY) .................................................. 15

Setting the Tag (TAG) ................................................................................. 15

Advanced Features Menu (ADVANCE).......................................................... 16

Advanced Features Menu & Display Messages......................................... 16

Alarm Output (OUTPUT)............................................................................... 17

Input Signal Filter (FILTER)........................................................................ 17

Volume Display Scaling (VOLSCAL) ............................................................ 17

Level Input Live Signal Calibration (LVL CAL)............................................ 18

Internal Calibration (ICAL).......................................................................... 18

Level Input Multipoint Linearization (MULTIPT)........................................... 18

Information (INFO)...................................................................................... 18

Setting Up the Password (PASSWRD) ........................................................... 19

Locking the Meter ...................................................................................... 19

Making Changes to a Password Protected Meter...................................... 19

Disabling Password Protection .................................................................. 19

PD6801 Explosion-Proof Loop-Powered Feet & Inches Level Meter

Instruction Manual

Operation........................................................................................................... 20

Front Panel Buttons Operation ................................................................... 20

Display Maximum, Minimum, and Input Current ....................................... 20

Reset Meter to Factory Defaults.................................................................. 20

Factory Defaults & User Settings................................................................ 21

Troubleshooting ............................................................................................... 21

Troubleshooting Tips................................................................................... 21

Quick User Interface Reference ...................................................................... 22

EU Declaration of Conformity.......................................................................... 23

Table of Figures

Figure 1. Enclosure Dimensions – Front View................................................... 7

Figure 2. Enclosure Dimensions – Side Cross Section View ........................... 7

Figure 3. Connector Board .................................................................................. 8

Figure 4. Connections without Backlight ........................................................... 9

Figure 5. Connections with Loop-Powered Backlight....................................... 9

Figure 6. Connections with Externally-Powered Backlight............................... 9

Figure 7. External Alarm Reset/Acknowledge Connections............................ 9

Figure 8. Connection to Device with Internal Pull-Up ....................................... 9

Figure 9. Output Connections ............................................................................. 9

PD6801 Explosion-Proof Loop-Powered Feet & Inches Level Meter

Instruction Manual

Specifications

Except where noted all specifications apply to operation at +25°C.

General

Display

Feet &

Inches

0.60" (15.2 mm) high

0 to 699FT 1115/16 IN

7-segment, programmable

1/16 or 1/8 fraction display

Seven

characters

(Tag &/or

Volume)

0.4" (10.2 mm) high

14-segment, 7-digits

Tank Level

Indicator

20-segments

Display

Orientation

Display may be mounted at 90° increments

up to 270° from default orientation.

Display

Assignment

Upper display: Feet & inches

Lower display may be assigned to custom unit

or tag, volume, volume and tag, percent

height, percent height and tag, or off.

Display

Update Rate

Ambient > -25°C: 2 Updates/Second

Ambient < -25°C: 1 Update/5 Seconds

Backlight

White; Loop-powered or externally powered.

Backlight can be enabled or disabled via

alternative wiring of terminal block. Loop-

powered backlight brightness will increase as

the input signal current increases. Externally

powered backlight has consistent brightness.

Externally

Powered

Backlight

Voltage

Range:

Maximum Power

9-36

VDC

0.2 W

0.25 W

0.5 W

0.75 W

Overrange

And

Underrange

Level display flashes to 699FT 1115/16 IN

Volume display flashes 9999999 if overrange,

-999999

if underrange.

Programming

Method

Four SafeTouch through-glass buttons when

cover is installed. Four internal pushbuttons

when cover is removed.

Noise Filter

Programmable low (

), medium (

MED

), high

(

), or off (

OFF

)

Recalibration

Recalibration is recommended at least every

12 months.

Max/Min

Display

Max/Min readings reached by the process are

stored until reset by the user or until power to

the meter is turned off.

Password

Programmable password restricts modification

of programmed settings.

Non-Volatile

Memory

All programmed settings are stored in non-

volatile memory for a minimum of ten years if

power is lost.

Normal Mode

Rejection

64 dB at 50/60 Hz

Environmental

Operating temperature range: -40 to 75°C

Storage temperature range: -40 to 75°C

Relative humidity: 0 to 90% non-condensing

Connections

Screw terminals accept 12 to 22 AWG wire

Enclosure

Explosion-proof die cast aluminum with glass

window, corrosion resistant epoxy coating,

color: blue. NEMA 4X, 7, & 9, IP68.

Two ¾" NPT threaded conduit openings. One

¾" NPT metal conduit plug with 12 mm hex

key fitting installed.

Mounting

May be mounted directly to conduit. Two

slotted flanges for wall mounting or NPS

1½" to 2½" or DN 40 to 65 mm pipe

mounting. See Dimensions on page 7.

Overall

Dimensions

5.65" x 5.25" x 4.86" (W x H x D)

(144 mm x 133 mm x 124 mm)

Weight

5.00 lbs (80 oz, 2.27 kg)

Warranty

3 years parts and labor. See Warranty

Information and Terms & Conditions on

www.predig.com for complete details.

Input

4-20 mA

Accuracy

±0.03% of calibrated span ±1 count

Maximum

Voltage Drop &

Equivalent

Resistance

Without Backlight

or with Externally

Powered Backlight

With Loop-Powered

Backlight

3.0 VDC @ 20 mA

6.0 VDC @ 20 mA

150 Ω @ 20 mA

300 Ω @ 20 mA

Temperature

Drift

50 PPM/°C from -40 to 75°C ambient

Multi-Point

Linearization

2 to 32 points, level and volume

independently programmed.

Minimum Span

Input 1 & Input 2: 0.10 mA

Calibration

Range

An Error message will appear if input 1

and input 2 signals are too close

together.

Input

Range

Minimum Span

Input 1 & Input 2

4-20 mA

0.10 mA

Input

Overload

Over current protection to 2 A max.

HART

Transparency

The meter does not interfere with existing

HART communications; it displays the

4-20 mA primary variable and it allows the

HART communications to pass through

without interruption.

The meter is not affected if a HART

communicator is connected to the loop.

The meter does not display secondary

HART variables.

Open Collector Output

Rating

Isolated open collector, sinking NPN

30 VDC @ 150 mA max.

Alarm Output

Assign to level or volume for high or low

alarm trip point.

Deadband

0-100% FS, user selectable

Acknowledge

Front panel ENTER button and external

RESET terminals resets output and screen

indication.

PD6801 Explosion-Proof Loop-Powered Feet & Inches Level Meter

Instruction Manual

Product Ratings and Approvals

Explosion-proof for use in:

Class I, Division 1, Groups B, C and D

Dust-ignition proof for use in:

Class II/III, Division 1, Groups E, F and G;

Flame-proof for use in:

Class I, Zone 1, AEx d Group IIC; T6

Protection by Enclosure:

Zone 21, AEx tb IIIC; T85°C

Ta = -40 to 75°C.

Enclosure: Type 4X, IP66.

Certificate number: 3040391

CSA

Explosion-proof for use in:

Class I, Division 1, Groups B, C and D

Dust-ignition proof for use in:

Class II/III, Division 1, Groups E, F and G;

Flame-proof for use in:

Zone 1, Ex d IIC T6

Ta = -40 to 75°C.

Enclosure: Type 4X & IP66/IP68.

Certificate number: 2325749

ATEX

II 2 G D. Flame-proof for use in:

Zone 1, Ex d IIC T6 Gb

Protection by Enclosure for use in:

Dust Atmospheres (Zone 21)

Ex tb IIIC T85°C Db IP68.

Ta = -40°C to +75°C

Certificate number: Sira 10ATEX1116X

IECEx

Flame-proof for use in:

Zone 1, Ex d IIC T6 Gb

Protection by Enclosure for use in:

Dust Atmospheres (Zone 21)

Ex tb IIIC T85°C Db IP68.

Ta = -40°C to +75°C

Certificate number: IECEx SIR 10.0056X

Special Conditions for Safe Use:

Use suitably certified and dimensioned cable entry

device and/or plug. The equipment shall be installed

such that the supply cable is protected from mechani-

cal damage. The cable shall not be subjected to ten-

sion or torque. If the cable is to be terminated within

an explosive atmosphere, then appropriate protection

of the free end of the cable shall be provided.

Year of Construction:

This information is contained within the serial number

with the first four digits representing the year and

month in the YYMM format.

For European Community: The PD6801 must be

installed in accordance with the ATEX directive

94/9/EC, and the product certificate Sira

10ATEX1116X.

Electromagnetic Compatibility

Emissions

EN 61326:2013

Safety requirements for measurement,

control, and laboratory use – Industrial

Group 1 Class A ISM emissions

requirements

Radiated

Emissions

Class A

Immunity

EN 61326:2013

Safety requirements for measurement,

control, and laboratory use

ESD ±4 kV contact, ±8 kV air

RFI –

Amplitude

Modulated

80-1000 MHz @ 10 V/m,

1.4-2.0 GHz @ 3 V/m,

2.0-2.7 GHz @ 1 V/m,

80% AM (1 kHz)

EFT ±2 kV DC mains, ±1 kV other

Telco Surge ±1 kV

CRFI 3 V, 0.15-80 MHz, 1 kHz 80% AM

Safety Information

•Read complete instructions prior to installation

and operation of the meter.

•Installation and service should be performed only

by trained service personnel. Service requiring

replacement of internal components must be

performed at the factory.

•Disconnect from supply before opening

enclosure. Keep cover tight while circuits are

alive. Conduit seals must be installed within

18" (450mm) of the enclosure.

•Verify that the operating atmosphere of the meter

is consistent with the appropriate hazardous

locations certifications.

•If the meter is installed in a high voltage

environment and a fault or installation error

occurs, high voltage may be present on any lead.

PD6801 Explosion-Proof Loop-Powered Feet & Inches Level Meter

Instruction Manual

Installation

For Installation in USA: The PD6801 must be in-

stalled in accordance with the National Electrical

Code (NEC) NFPA 70.

For Installation in Canada:The PD6801 must be

installed in accordance with the Canadian Electrical

Code CSA 22.1. All input circuits must be derived

from a CSA approved Class 2 source.

For European Community: The PD6801 must be

installed in accordance with the ATEX directive

94/9/EC and the product certificate Sira

10ATEX1116X.

•Disconnect from supply before opening

enclosure. Keep cover tight while circuits are

alive. Conduit seals must be installed within

18" (450mm) of the enclosure.

Wiring connectors are accessed by opening the

enclosure. To access electrical connectors, remove

the 2 captive screws, then disconnect the ribbon

cable from the display module and set the display

module aside.

Unpacking

Remove the meter from box. Inspect the packaging

and contents for damage. Report damages, if any, to

the carrier.

If any part is missing or the meter malfunctions,

please contact your supplier or the factory for

assistance.

Pre-Installed Conduit Plug

The PD6801 is supplied with one pre-installed conduit

plug for installations that do not require the use of

both conduit entries. The conduit/stopping plug

includes an internal hexagonal socket recess for

removal. The conduit plug and its factory installation

are included in all hazardous area approvals of this

product.

•In hazardous areas, conduit and conduit/stopping

plugs require the application of non-setting

(solvent free) thread sealant. It is critical that all

relevant hazardous area guidelines be followed for

the installation or replacement of conduit or plugs.

Mounting

The PD6801 has two slotted mounting flanges that

may be used for pipe mounting or wall mounting. Al-

ternatively, the unit may be supported by the

conduit using the conduit holes provided.

Refer to Figure 1 and Figure 2.

•Do not attempt to loosen or remove flange bolts

while the meter is in service.

Dimensions

All units: inches [mm]

Figure 1. Enclosure Dimensions – Front View

Figure 2. Enclosure Dimensions –

Side Cross Section View

3.35 (85.1)

2.25 (57.1)

(8.2)

5.25 (133.4)

(143.5)

5.65

0.32

3.35 (85.0)

4.15 (105.5)

3.22 (81.9) (123.5)

4.86

PD6801 Explosion-Proof Loop-Powered Feet & Inches Level Meter

Instruction Manual

Cover Jam Screw

The cover jam screw should be properly installed

once the meter has been wired and tested in a safe

environment. The cover jam screw is intended to

prevent the removal of the meter cover in a flame-

proof environment without the use of tools. Using a

M2 hex wrench, turn the screw clockwise until the

screw contacts the meter. Turn the screw an

additional 1/4 to 1/2 turn to secure the cover.

Caution: Excess torque may damage the threads

and/or wrench.

Connections

To access the connectors, remove the enclosure cov-

er and unscrew the two captive screws that fasten the

display module. Disconnect the ribbon cable and re-

move the display module. Signal connections are

made to a four-terminal connector in the base of the

enclosure. Grounding connections are made to the

two ground screws provided on the base – one

internal and one external.

SIGNAL +

4-20 mA signal input positive

terminal connection

SIGNAL -

4-20 mA signal return/negative

terminal connection when not

using loop powered backlight.

BACKLIGHT +

+9-30 VDC when powering

backlight from external supply.

BACKLIGHT -

4-20 mA signal return/negative

terminal when using the

installed loop powered backlight

or ground/negative when power-

ing backlight from external

supply.

OUTPUT+

NPN open collector output

positive.

OUTPUT-

NPN open collector output

negative.

RESET +

Contact closure alarm

acknowledge pull up to 3 VDC.

RESET-

Contact closure alarm

acknowledge ground/negative.

Refer to Figure 3 for terminal positions.

•Observe all safety regulations. Electrical wiring

should be performed in accordance with all

agency requirements and applicable national,

state, and local codes to prevent damage to the

meter and ensure personnel safety.

•Static electricity can damage sensitive

components.

•Observe safe handling precautions for

static-sensitive components.

•Use proper grounding procedures/codes.

•If the meter is installed in a high voltage

environment and a fault or installation error

occurs, high voltage may be present on any lead

or terminal.

Figure 3. Connector Board

SAFE-TOUCH

BUTTONS

BACKLIGHT

POWER

UNLOCK LOCK LOOP

9-36 VDC

+-+-

SIGNAL BACKLIGHT

+-+-

OUTPUT RESET

PD6801 Explosion-Proof Loop-Powered Feet & Inches Level Meter

Instruction Manual

Wiring Diagrams

Signal connections are made to a four-terminal

connector mounted in the base of the enclosure per

Figure 3. Connector Board.The enclosure also

provides one internal and one external earth

grounding screw.

For installations that don’t use the backlight, the

maximum voltage drop is 3 V and connections are

made per Figure 4.

For installations that use the backlight powered from

the meter, the maximum voltage drop is 6 V and

connections are made per Figure 5.

For installations that use the backlight powered from

an external source, the maximum voltage drop is 3 V

and connections are made per Figure 6.

Figure 4. Connections without Backlight

Figure 5. Connections with Loop-Powered Backlight

Loop-powered backlight brightness will increase as

the input signal current increases. If constant back-

light brightness is desired, the backlight should be

Figure 6. Connections with Externally-Powered Backlight

It is possible to use the same transmitter (signal loop)

power supply for the externally powered backlight.

The backlight circuit will draw 25 mA in addition to the

loop circuit.

External Acknowledge Connection

External acknowledge connections are made to two

terminals labeled RESET. Connect to a contact closure

source such as a relay or a pushbutton as shown in

Figure 7.

Figure 7. External Alarm Reset/Acknowledge

Connections

Open Collector Output Connections

Output connections are made to two terminals labeled

OUTPUT. Connect to an input device such as alarm

indicator as shown in Figure 8 or drive a relay as

shown in Figure 9.

•To avoid damaging the PD6801’s amplifying

components, use care not to wire incorrectly or

exceed output ratings. A diode, such as 1N4000

series, will provide protection from relay

transients.

Figure 8. Connection to Device with Internal Pull-Up

Figure 9. Output Connections

4-20 mA

Transmitter

+-+-

SIGNALBACKLIGHT

Power

Supply

UNLO CK LOCK

SAFE-TOUCH

BUT TONS

LOOP9-36

VDC

BACKLIGHT

POWER

+-+-

OUTP U TRESET

UNLO CK LOCK

SAFE-TOUCH

BUT TONS

LOOP9-36

VDC

BACKLIGHT

POWER

4-20 mA

Transmitter

+-+-

SIGNA LBACKLIGHT

Slide Switch to

LOOP

Power

Supply

OUTP U TRESET

4-20 mA

Transmitter

+-+-

SIGNA LBACKLIGHT

Slide Switch to

9-36 VDC

Power Supply

Power

Supply

+-+-

OUTP U TRESET

UNLO CK LOCK

SAFE-TO UCH

BUT TO NS

LOOP9-36

VDC

BACKLIGHT

POWER

+-+-

SIGNA LBACKLIGHT

+-+-

OUTP U TRESET

UNLO CK LOCK

SAFE-TOUCH

BUT TO NS

LOOP9-36

VDC

BACKLIGHT

POWER

+-+-

SIGNA LBACKLIGHT

+-+-

OUTP U TRESET

Alarm Recorder

or Annunciator

(e.g. PD8-158)

UNLO CK LOCK

SAFE-TO UCH

BUT TO NS

LOOP9-36

VDC

BACKLIGHT

POWER

+-+-

SIGNA LBACKLIGHT

+-+-

OUTP U TRESET

UNLO CK LOCK

SAFE-TOUCH

BUT TO NS

LOOP9-36

VDC

BACKLIGHT

POWER

PD6801 Explosion-Proof Loop-Powered Feet & Inches Level Meter

Instruction Manual

Setup and Programming

There is no need to recalibrate the meter for

milliamps when first received from the factory.

The meter is factory calibrated for milliamps prior to

shipment. The calibration equipment is traceable to

NIST standards.

Overview

Setup and programming is done through the infrared

through-glass SafeTouch buttons or using the

mechanical buttons when uncovered. There are two

slide switches located on the connector board. One is

used to select backlight power and the other is to lock

or unlock the SafeTouch Buttons.

After all connections have been completed and

verified, connect the ribbon cable to the display mod-

ule, fasten the display module to the base, install

enclosure cover, and then apply power.

SafeTouch Buttons

The PD6801 is equipped with four sensors that

operate as through-glass buttons so that it can be

programmed and operated without removing the

cover (and exposing the electronics) in a hazardous

area. These buttons can be disabled for security by

selecting the LOCK setting on the SAFE-TOUCH

BUTTONS switch located on the connector board in

the base of the enclosure.

SafeTouch Button Operation

To actuate a button, press and remove one finger

to the glass directly over the marked button area.

Remove finger to at least 4 inches away from the

glass in between button activations. SafeTouch and

mechanical buttons may be held to cycle through

menus or digits in place of repeatedly pushing a

button. The sensors are disabled when a mechanical

button is pressed and will automatically be re-enabled

after 60 seconds of inactivity.

SafeTouch Button Tips and

Troubleshooting

The SafeTouch buttons are designed to filter normal

levels of ambient interference and to protect against

false triggering, however, it is recommended that the

SafeTouch buttons be disabled (slide switch to LOCK)

if there is an infrared interference source in line-of-

sight to the display.

SafeTouch Button Tips:

•To the extent possible, install the display facing

away from sunlight, windows, reflective objects

and any sources of infrared interference.

•Keep the glass window clean.

•Tighten the cover securely.

•Use a password to prevent tampering.

•If the cover has not been installed and secured

tightly, it may take a moment for the SafeTouch

buttons to properly self-calibrate when the cover

is tightened.

•SafeTouch buttons will not work if two or more

buttons are detected as being pressed simulta-

neously. As a result, be careful to avoid triggering

multiple buttons or reaching across one button

location to press another.

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