Table of Contents
Advertisement
V
I
I
I
.
C
A
L
I
B
R
A
V
I
I
I
.
C
A
L
I
B
R
A
Zero-Point Adjustment should only to be carried out on one sensor at a time.
•
Zero-Point Adjustment of Sensor Element (Potentiometer UO (Zero voltage).
With the aid of a calibration cap, the sensor is subjected to zero gas (100% vol. N
volume flow of 0.5 l/min.
After approx. 5 min., the transmitter signal reaches its final state.
The voltage at the measured points X2:S1 (ground) and X2:S6 of the service terminal is
measured with a voltmeter (set mV DC).
The voltage is set to 0 mV DC with the potentiometer U0; voltage may indicate either positive or
negative values. Clockwise rotation of the potentiometer will increase voltage.
Should a positive voltage remain after turning the potentiometer U0 anti-clockwise as far as it
will go, the jumper J1 should be relocated into the left-hand position and the adjustment
repeated.
T
I
O
N
A
N
D
A
D
T
I
O
N
A
N
D
A
D
mV
J1
U0
J
U
S
T
M
E
N
T
J
U
S
T
M
E
N
T
WARNING :
9
OLDHAM EQUIPMENTS
) with a
2
- Quick Links:
- Calibration and Adjustment
Hide quick links:
Advertisement
Table of Contents
