TESTO Hygrotest 600 WH User manual
Hygrotest 600
WH / WHT -20/+70 °C
DH / DHT -20/+70 °C / DHT -20/+120 °C
PHT -20/+70 °C / PHT -20/+120 °C
Instruction manual en
Contents
Introduction
2
EMC according to guideline 2004/108/EEC
Introduction........................................................................................................................2
Handling instructions..........................................................................................................3
Dimensions of measuring instrument ................................................................................3
Description of functions ....................................................................................................4
Standard versions ..............................................................................................................5
Version options ..................................................................................................................6
Connection assignment ....................................................................................................8
Description of 2 wire technology ........................................................................................8
Connection suggestions for 2 wire technology ..................................................................9
Current measurement ..................................................................................................9
Voltage measurement ................................................................................................10
Attaching ferrite sleeve ....................................................................................................11
Installing a digital display..................................................................................................11
Advice on use ..................................................................................................................12
Adjustment ......................................................................................................................13
Adjustment with testo 650/400..................................................................................13
Adjustment with control and adjustment set ..............................................................14
Maintenance ....................................................................................................................15
Cleaning the humidity sensor ....................................................................................15
Technical data..................................................................................................................16
Ordering data ..................................................................................................................17
Dear Customer
Thank you for purchasing a Testo product. We hope you will enjoy the benefits of this product for a long
time to come and that it will aid you with your work.
Please read this instruction manual carefully and familiarise yourself with the operation of the instrument
before putting it to use.
If problems should occur which you cannot rectify yourself, please consult our Customer Service
Department or your nearest distributor. We will do our best to help you quickly and competently to
avoid downtimes.
Please read prior to operation!
Do not measure on live parts!
Observe sensor measuring ranges!
The probes may be damaged if overheated.
Observe maximum storage and transport temperature
as well as maximum operating temperature
(e.g. protect instrument from direct sunlight).
The warranty is invalid if inexpertly handled or force is
used !
Installation, adjustment and calibration work should only
be carried out by trained professionals.
Handling instructions
Dimensions of instrument
in mm
3
52
105
120*
5.1*
140
82.5*
M20x1.5 M16x1.5 M16x1.5
41*
* Mounting dimensions
130
Opening Ø 5 mm
Note
The cable lead-ins differ
depending on version
The affordable transmitters from the hygrotest 600
series have been developed for a wide variety of HVAC
applications but also for industrial drying processes, for
example. Depending on design the modular design
facilitates wall assembly, duct assembly as well as
measurements at inaccessible points (probe can be
attached to pipe).
The transmitters can be easily calibrated and adjusted
on-site via a control and adjustment set (see adjustment
guidelines). The user saves time and money when
assembling and installing thanks to the industrial
standard 4 to 20mA in 2 wire technology and the
variable assembly options (rail, wall, duct, separate
probes).
Advantages of hygrotest 600
Ideal price/performance ratio:
- Electronics immune to interference thanks to reverse
battery protection, overvoltage protection, EMC
compliance to industrial standards
- Electrical isolation
- Low installation and assembly costs thanks to
industrial 4 to 20 mA 2 wire technology
- Easy on site calibration and adjustment for humidity
and temperature via adjustment set
- LED display (optional)
- RS 485 Interface (optional)
Description of functions
4
5
For monitoring ambient air conditions using an
external humidity and temperature probe (temperature
output only in Hygrotest 600 WHT).
For duct measurement in compact design using an
external humidity and temperature probe.
With an external humidity and temperature probe,
2 m long cable, maximum
hygrotest 600 WH
hygrotest 600 WHT -20/+70 °C
hygrotest 600 DH
hygrotest 600 DHT -20/+70 °C
hygrotest 600 DHT -20/+120 °C
hygrotest 600 PHT -20/+70 °C
hygrotest 600 PHT -20/+120 °C
Standard versions
210
100
12
12
12
65
200
1.4571
DH / DHT 70
Plastic (70°C version)
Plastic (70° C version)
Scaling: 4 to 20mA = 0 to 100% RH
4 to 20mA = 20 to +70 °C (WHT 20/+70 °C)
Scaling: 4 to 20mA = 0 to 100% RH
4 to 20mA = 20 to +70 °C (DHT 20/+70 °C)
4 to 20mA = 20 to +120 °C (DHT 20/+120 °C)
Scaling: 4 to 20mA = 0 to 100% RH
4 to 20mA = -20 to +70 °C (PHT -20/+70 °C)
4 to 20mA = -20 to +120 °C (PHT -20/+120 °C)
Ter ms
W: Wall H: Humidity
D: Duct T: Temperature
P: Probe -20/+70 °C: Standard scaling -20/+70 °C
Part no. for hygrotest 600 product series: 0555.0600
Example:
hygrotest 600 PHT / -20/+70 (cable version with external probe, with humidity and
temperature measurement up to + 70 °C)
Stainless steel 1.4571
(120°C version)
Stainless steel 1.4571
(120°C version)
6
Version options
Analog output
B 1 4 to 20 mA (2-wire-technology)
Probe
Probe material stainless steel 1.4571
Probe material plastic
C 1 Standard probe length incl. sensor protection filter 65 65 200 200 200 100 210
C 2 Special probe length, stainless steel incl. sensor protection cap........
DH -20/+120°C: min 100mm; PHT -20/+120°C: min. 150mm; max. 800mm
C 3 Special probe length, plastic, 100 mm, incl. sensor protection cap
Cable
D 1 Standard cable length 2 m
D 2 Special cable length up to tip of probe .......m (min. 250 mm; max.2 m)
Adjustment
F 1 Humidity inaccuracy ±2 %RH
Sensor protection caps
G 1 Stainless steel sintered cap
G 2 Wire mesh filter
G 3 PTFE sintered filter
G 4 Slid metal filter
G 5 ABS-cap slit
Displays
H 1 Display double-spaced - loop feed with maximum load 50 Ohm
H 2 Display double-spaced - external supply with max. load 500 Ohm
H 3 Display double-spaced - with RS485 - no analog outputs possible
H 4 Display double-spaced - with RS485 -analog output possible
H 5 Display double-spaced with RS485 and 2x2 limit signal outputs - analog outputs possible
600 DH
600 DHT
-20/70
600 DHT
-20/120
600 PHT
-20/70
600 PHT
-20/120
Order Code
600 WH
600 WHT
-20/70
Version options
7
- standard - optional
H 6 Display double-spaced with 2x2 limit signal outputs - analog outputs possible
H 7 Simple display single-space - loop feed with maximum load 50 Ohm
Scaling
K 1 Standard scaling channel 1 (4 to 20 mA = 0 to 100 %RH)
K 2 Special scaling channel 1 (4 to 20 mA = ...... choosen unit out of “L”
Note: please specify the scaling range
L 1 Realtive humidity (%RH)
L 2 Dewpoint (°Ctd)
L 3 Dewpoint (°Ftd)
M 1 Standard scaling channel 2 (4 to 20 mA = temperature scaling (°C) -20/70 -20/70 -20/120-20/70 -20/120
M 2 Special scaling channel 2 (4 to 20 mA = ...... choosen unit out of “N”
Note: please specify the scaling ranges
N 1 Temperature (°C)
N 2 Temperature (°F)
600 DH
600 DHT
-20/70
600 DHT
20/120
600 PHT
20/70
600 PHT
-20/120
Order Codes
600 WH
600 WHT
-20/70
8
Connection assignment
1 + RH 2 wire techn. 4 to 20 mA = 0 to 100 %RH,
2 - RH
2 wire techn. 4 to 20mA = -20 to +70 °C
(with WHT -20/70 / DHT -20/70 / PHT -20/70)
2 wire technology 4 to 20 mA = -20 to +120°C
(with DHT -20/120 / PHT -20/120)
4 - °C
3+°C
In order to avoid losing the adjustment values,
adjustment buttons should only be activated if the
adjustment container is screwed on (see page 10,
adjustment with control and adjustment set).
}
}
^
^
2 wire transmitters are used to convert non-electrical
parameters, e.g. temperature, pressure,
relative humidity etc. to an electrical standard signal of 4
to 20 mA.
The transmitters are connected to a d.c. voltage source
by means of 2 cables. The power consumption of the
transmitter from the d.c. current source changes linearly
in the range from 4 to 20 mA, depending on the
parameter being measured.
The advantages of the two wire system are easy
installment and problem-free connection. The length of
the cables does not influence the measured signal. A
further additional advantage is the so-called “live zero”
signal i.e. 0 parameter corresponds to a current of 4
mA. In this way, this value is also clearly transmitted and
cannot be confused, for example, with a system which
is switched off or an ununterrupted line.
Description of 2 wire technology
Connection socket
for scaling adapter
or testo 400/650
instrument for
1-point adjustment
1 2 3 4
9
4 to 20 mA = -20 to
+120°C / +70°C
for WHT/DHT/PHT
Connection suggestions
for 2 wire technology
Current measurement
Option 1:
Option 2:
4
3
2
1
Transmitter
4 to 20 mA = 0 to +100 %RH
24 V
DC
4
3
2
1
Transmitter
4 to 20 mA = -20 to +120°C/+70°C
for WHT/DHT/PHT
4 to 20 mA = 0 to +100 %RH
hygrotest 600 with displays H1, H3, H7 is supplied
via the humidity connections. The temperature output,
if available, can only function if a humidity circuit with
24 V is connected. This also applies in combination
with all displays.
230V/
110V
230V/
110V
10
Voltage measurement
Long signal paths can be a problem when transmitting
voltage signals (cable resistance, interference etc.).
It is advisable to use current signals for safe
transmission (4 to 20 mA).
Shunt resistances between 50 Ω or 500 Ω (50 Ω: 0.2 to
1 V, 500 Ω: 2 to 10 V) are parallel connected to the
multimeter, controller etc. when measuring voltage (0.2
to 1 V, 2 to 10 V) (see Figure).
Advantage
- Reliable signal due to power transmission
- Recognises disconnected cable (“live zero”)
Voltage measurement from 2 to 10 V or 2 to 10 V is
not possible in instruments with displays H1, H3, H7
since they are loop-fed.
Connection suggestions
for 2 wire technology
4
3
2
1
Transmitter
0.2...1V (2...10V) = -20...+70 °C
0.2...1V (2...10V) = 0...+100 %RH
50Ω
(500Ω)
50Ω
(500Ω)
%RH
This manual suits for next models
4
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