WIKA data sheet CT 15.51 ∙ 03/2019
Page 3 of 15
Digital process calibrator model CPH7000
Case
Material
PC + ABS blend
Ingress protection
IP54 category 2
Dimensions
see technical drawing
Weight
approx. 1.9 kg (4.19 lbs.) without internal pump and reference sensor
approx. 2.5 kg (5.51 lbs.) incl. internal pump and reference sensor
Internal sensor technology
Pressure
5)
Gauge pressure
bar
-1 ... +1
-1 ... 5
-1 ... 10
-1 ... 20
-1 ... 25
psi
-14.5 ... +14.5 -14.5 ... +70
-14.5 ... +145 -14.5 ... +300 -14.5 ... +360
Absolute pressure
bar abs. 0 ... 1
0 ... 1.6
0 ... 6
0 ... 10
0 ... 20
0 ... 25
psi abs.
0 ... 14.5
0 ... 23
0 ... 87
0 ... 145
0 ... 290
0 ... 360
Overpressure safety
3 times
Accuracy of the measuring chain
6)
0.025 % of span
7)
Resolution
5 digits
Pressure connection
G ⅛ female thread (only with selected pneumatic unit)
Electrical safety:
Resistance to overvoltage
Yes
Short-circuit resistant
Yes
Reverse polarity protection
Yes
Voltage-resistant
Up to 60 V
Input impedance
Current measurement
20 Ω
Voltage measurement
1 MΩ
Current
Measuring input
0 … 30 mA
Measuring output
0 … 30 mA
Resolution
1 µA
Accuracy
Measure: 0.01 % ±1 µA
Supply: 0,01 % ±2 µA
8)
Voltage
Measuring input
DC 0 … 30 V
Measuring output
DC 24 V
Resolution
1 mV
Accuracy
0.01 % or reading ±1 mV
Barometric reference
1) 9)
Measuring range
850 ... 1,100 mbar (12.3 ... 16 psi)
Accuracy
±1 mbar
1) Optional
5) The internal reference sensor is only available in combination with a pneumatic unit.
6)
It is defined by the total measurement uncertainty, which is expressed with the coverage factor (k = 2) and includes the following factors: the intrinsic performance of the instrument, the
measurement uncertainty of the reference instrument, long-term stability, influence of ambient conditions, drift and temperature effects over the compensated range during a periodic
zero point correction.
7) Calibrated at 23 °C (74 °F) and in vertical mounting position.
8)
In the event of interference caused by high-frequency electromagnetic fields in a frequency range of 200 ... 300 MHz, an increased deviation of up to 0.1 % is expected for the current
output function.
9)
The barometric reference can be used to switch pressure types, absolute <=> gauge. With gauge pressure sensors, the measuring range of the sensors must begin with -1 bar (-15 psi)
in order to carry out a complete absolute pressure emulation.
