Nagman METCAL 1200 User manual
Metrological Dry Block
HIGH TEMPERATURE CALIBRATOR
METCAL 1200
NAG/IM/Metcal 1200/01/22 2
BRIEF PROFILE
An ISO 9001-2015 certified Instrumentation company
(since 1972) serving Industries in India & Worldwide thro’ the
Manufacture & Supply of World-Class Calibration
Instruments & Systems like Temperature, Pressure & Signal
Calibrators, Black Body Calibration Sources, Pneumatic &
Hydraulic Hand Pumps, Dead Weight & Comparison Testers,
Calibration Test Benches, etc.
NAG/IM/Metcal 1200/01/22 3
Dear User,
Thank you for selecting Nagman’s Sub-Zero
Temperature Calibrator (Dry Block) and
becoming a proud owner of this Calibration
Instrument.
We have strived hard to ensure the accuracy
of the contents of this manual. We would
appreciate any suggestions/feedback to
correct any errors noticed and to improve
the quality of contents of this Manual
Specifications are subject to change owing to
continuous development and we reserve
rights to effect Changes / Modifications to
this Manual.
Read the Instructions before starting to use
the Product.
Wishing you for a long association with us.
For any service related issues, please contact
VERSION CONTROL
Version No. Updated on Updated by
V 1.1 11-11-2022 Nagman
NAG/IM/Metcal 1200/01/22 4
CONTENTS
S.No. Description Page No.
1. Introduction …………………………………………………………..5
2. Specification…………………………………………………………….6
3. Standard Delivery & Optional Accessories ……………9
4. Parts Identification with Picture………………………….…10
5. Connection Diagram …………………………………………..…17
6. Safety Instructions ………………………………………………….18
7. Operating Instruction ………………………………………….….24
8. Troubleshooting / Maintenance……………………………..28
NAG/IM/Metcal 1200/01/22 5
1. INTRODUCTION
Precision Dry block High Master Temperature
Calibrator (METCAL 1200) is used for calibrating
RTD’s, Thermocouples, Temperature Switches,
Temperature Indicators etc.
The front panel continuously shows the current
Thermo well block temperature. Desired
temperature is set by using keypad which gives the
corresponding set value in the display.
Proper use of the instrument will provide accurate
calibration of temperature sensors.
Heater Block
The “Block” is made up of Inconel and provides a
relatively constant and accurate temperature
environment. Heaters are placed inside the tower
assembly to provide heating to the sensor.
A high precision platinum RTD is embedded at the
base of the block assembly to sense and control the
temperature of the block.
The entire assembly is suspended in an air cooled
chamber thermally isolated from the chassis and
electronics.
NAG/IM/Metcal 1200/01/22 6
2. SPECIFICATION
Range 150˚C to 1200˚C
Resolution 0.1˚C
Accuracy ±2˚C
Stability ±0.3˚C
Stabilization time 15 minutes approx.
Temperature Readout ˚C/˚F Switchable.
Heating Time (150 to 800°C) 30 minutes approx.
Heating Time (800 to 1200°C) 60 minutes approx.
Cooling time (1200 to 800°C) 30 minutes approx..
Cooling time (800 to 150°C) 130 minutes approx..
Switch Test facility Provided
Interchangeable Thermowell Multihole to suit 2 x ¼" & 1 x ½" Probes.
Other Sizes available as optional
Power Supply Standard - 230V AC, 50 Hz
Optional - 110V AC, 60 Hz
Switch contact Open/Close
Immersion Depth 105 mm
Well diameter 30 mm
Weight 11.6 kg (approx.)
Dimensions (L x D x H) 160 X 365 X 450 mm
NAG/IM/Metcal 1200/01/22 7
MEASUREMENT CAPABILITY
Input Measurement
Type Resolution Range Accuracy
mVL 0.001 0 to 100 ±(0.025% + 2µV)
mVH 0.01 0 to 1000 ±(0.025% + 10µV)
Volts 0.0001 0 to 10 ±(0.025% + 0.08mV)
mA 0.0001 0 to 25 ±(0.025% + 0.4µV)
Ohms 0.001 0 to 500 ±(0.025% +12mΩ)
KOhms 0.00001 0 to 3.5k ±(0.025% + 120mΩ)
RTD
Type Resolution Range Accuracy
Pt100 0.01 -100 to 800 ±(0.025% + 0.1⁰C)
Pt200 0.1 -100 to 600 ±(0.025% + 0.15⁰C)
Pt500 0.1 -100 to 530 ±(0.025% + 0.1⁰C)
Pt1000 0.01 -100 to 650 ±(0.025% + 0.1⁰C)
Thermocouples
Type Resolution Range Accuracy
J 0.1 -100 to 1200 ±(0.025% + 0.1⁰C)
K 0.1 -60 to 1260 ±(0.025% + 0.1⁰C)
R 0.1 150 to 1700 ±(0.025% + 0.2⁰C)
S 0.1 170 to 1700 ±(0.025% + 0.2⁰C)
N 0.1 0 to 1300 ±(0.025% + 0.1⁰C)
B 0.1 920 to 1820 ±(0.025% + 0.2⁰C)
T 0.1 0 to 400 ±(0.025% + 0.1⁰C)
NAG/IM/Metcal 1200/01/22 8
ENVIRONMENTAL CONDITIONS
This instrument should not be operated in an excessively
dusty & dirty environment and explosive zones.
The instrument operates safely under the following
conditions :
Operating temperature : 23 ±2˚C
Storage Temperature : -20˚C to 40˚C.
Ambient relative humidity : 15 – 50%
Mains voltage within ±5 % of nominal
Minimum vibrations in the calibration environment.
NAG/IM/Metcal 1200/01/22 9
3. STANDARD DELIVERY & OPTIONAL ACCESSORIES
Standard Delivery
Basic Instrument
Test Leads, Mains Cable & Spare Fuses
Multihole Insertion Tubes (to suit 2 x ¼” & 1 x ½”
probe)
Tool for Insertion Tubes
Computer Interface & “Metcal” Calibration
Software
Calibration Certificates are issued in Accordance
with our Scope as granted by NABL per ISO/IEC
17025:2017 Standards
Carrying Case
Instruction Manual
Optional Accessories
Additional Thermowells / Insertion Tubes &
Multihole – Consult us.
NAG/IM/Metcal 1200/01/22 10
4. PARTS IDENTIFICATION (Typical Photo)
Heater Block
Keypad &
Display
Front Panel
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