21
WIKA operating instructions, models GDM-100-TI, GDM-100-TA
EN
14300398.01 04/2019 EN/DE/FR/ES
9. Specifications
Measuring ranges
Nominal size in mm
100
Measuring range
Vacuum and overpressure range with measuring span of 1.6 ... 25 bar
(at an ambient temperature of 20 °C and gaseous phase)
Pressure element
Leak rate
≤ 1 · 10
-8
mbar · l / s
Test method
Helium mass spectrometry
Output signals
Output signal
4 ... 20 mA, 2-wire
Permissible max. load
R
A
R
A
≤ (U
B
- 10 V) / 0.02 A with R
A
in ohms and U
B
in volts
Switch contacts
Number of contacts
Max. 4 magnetic snap-action contacts
Switching function
Normally open, normally closed, change-over contact (max. 2 switch
points)
Switch point setting
secured switch points, not adjustable (option: Adjustable switch
points)
Switching power
For cases with gas filling: 30 W / 50 VA, max. 1 A
With cases with filling liquid: 20 W / 20 VA, max. 1 A
Voltage supply
Power supply
DC 10 ... 30 V
Accuracy specifications
Mechanical display
±1 % at an ambient temperature of 20 °C [68 °F]
±2.5 % at an ambient temperature of -20 … +60 °C and with
calibration pressure in accordance with reference isochore (reference
diagram KALI-Chemie AG, Hanover, prepared by Dr. Döring 1979)
Transmitter
Point of optimal
density
-40 °C: 3 % of span
20 °C: 1 % of span
60 °C: 2.3 % of span
9. Specifications
