Michell Instruments PC33, Руководство пользователя

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PC33 & 52 User’s Manual
4 97238 Issue 2, October 2013
CALIBRATION
3.1 Calibration & Adjustment for 3% Accuracy (1pt Adjustment)
PC33
1. Remove the screw at the side of the connector.
2. Carefully unscrew the sensor protection cap from the head.
dO nOT TOUCH THE SEnSOR ELEMEnT
(see 3 below)
3. Carefully remove the circuit board from the body by pulling on the
threaded end while holding the tube.
• The transmitter should be calibrated at one point, for example 50%
RH.
• Once this value is reached and the reading of the reference has
stabilized, adjust the transmitter with the RH potentiometer (see
1 below).
• For versions with a T output the temperature should be calibrated
at ambient temperature.
• After stabilizing, adjust with the temperature potentiometer (see
2 below).
See Figure 5 for 2-wire V DC power supply voltage, output 4-20 mA and Figure 6 for
3/4-wire V DC power supply voltage, output 0 to 1, 0 to 5 or 0 to 10 V.
2-wire (mA)
1 3
2
  
PIN 1 WHITE
PIN 3 BROWN
PIN 4 GREEN
PIN 2 YELLOW
CONNECTIONS
RH
-
T
-
CONNECTOR CABLE
TEMPERATURE RAnGE
INPUT j3 j4 j5
0 to +50°C
(+32 to +122°F)
  
0 to +100°C
(+32 to +212°F)

-20 to +80°C
(-4 to +176°F)


Soldered joint
Figure 4 PC33 - 2-wire Connection