Error Signals; Order Code - Delta OHM DO 9761T Bedienungsanleitung

Calibrating the analog output
For the DO 9761T:
- Press the PRG key until the message P7 appears on the display.
- Connect a precision milliammeter to the analog output, for reference.
- Press the CAL key twice. The message P7 appears at the top of the
display while 4.0 appears at the bottom to indicate calibration at 4 mA.
s t
- With the and keys adjust the value of the output current so as to
have an indication of 4.00 mA on the reference milliammeter.
- Press the CAL key. The message P7 appears at the top of the display
while 20.0 appears at the bottom to indicate calibration at 20 mA.
s t
- With the and keys adjust the value of the output current so as to
have an indication of 20.00 mA on the reference milliammeter.
- Press OK to confirm.
1
24 Vac
2
1
2
For the DO 9861T:
- Connect a precision milliammeter to analog output 1, for reference.
- Press the PRG key until the message P12 appears on the display. The
message P12 appears at the top of the display while 4.0 appears at the
bottom to indicate calibration at 4 mA.
s t
- With the and keys adjust the value of the output current so as to
have an indication of 4.00 mA on the reference milliammeter.
- Press the CAL key. The message P12 appears at the top of the display
while 20.0 appears at the bottom to indicate calibration at 20 mA.
s t
- With the and keys adjust the value of the output current so as to
have an indication of 20.00 mA on the reference milliammeter.
- Connect a precision milliammeter to analog output 2.
- Press the PRG key until the message P13 appears on the display. The
message P13 appears at the top of the display while 4.0 appears at the
bottom to indicate calibration at 4 mA.
s t
- With the and keys adjust the value of the output current so as to
have an indication of 4.00 mA on the reference milliammeter.
- Press the CAL key. The message P13 appears at the top of the display
while 20.0 appears at the bottom to indicate calibration at 20 mA.
- With the and keys adjust the value of the output current so as to have
an indication of 20.00 mA on the reference milliammeter.
- Press OK to confirm.
Display
Symbol description
TD indicates that the value shown is the dry bulb temperature in
°C.
TW indicates that the value shown is the wet bulb temperature in
°C.
DP indicates that the value shown is the dew point temperature
in °C.
% RH indicates that the value shown is the relative humidity.
gr/m 3 indicates that the value shown is the absolute humidity
(gr per m 3 of air).
gr/kg indicates that the value shown is the mixing ratio (gr per kg
of dry air).
A indicates that relay A is in ON.
B indicates that relay B is in ON.
ON indicates that the value shown corresponds to the closing
threshold of the contacts of relay A or B.
OFF indicates that the value shown corresponds to the closing
threshold of the contacts of relay A or B.
Min 10Vdc
V
11
A
10
Regulator
9 4...20 mA
Min 10Vdc
V
11
10
Regulator
A
9
V+
4...20 mA

Error signals

OFL - Signal which appears during measurement when the value to be
shown is out of scale.
ERR - Signal which appears to indicate that the sensor is faulty or is
disconnected, if referring to the dry bulb temperature or the relati-
ve humidity. If referring to the other parameters, it indicates that it
is impossible to calculate that value (DP, gr/m
--- - Signal which appears to indicate that the temperature sensor is
faulty or is disconnected.
E4 - Reading error on the EEPROM.

Order code

DO 9761T: The characteristics shared by the transmitters in this
series are: active or passive transmitter, 24 V ac
power supply, single analog output 4÷20 mA, double
LCD indication, dimensions 120x122x56 mm, combi-
ned relative humidity and temperature probe.
Version:
DO 9761TV/1: Vertical probe L=150 mm.
DO 9761TO/2: Horizontal probe L=350 mm, sliding joint.
DO 9761TC/1-2: Probe L=150 mm, cable L=2 meters.
DO 9761TC/2-5: Probe L=350 mm, sliding joint, cable L=5 meters.
DO 9761TC/2-10: Probe L=350 mm, sliding joint, cable L=10 meters.
DO 9861T: The characteristics shared by the transmitters in this
series are: active or passive transmitter, 24 V ac
power supply, double analog output 4÷20 mA, double
LCD indication, dimensions 120x122x56 mm, combi-
ned relative humidity and temperature probe.
Version:
DO 9861TV/1: Vertical fixed probe L=150 mm.
DO 9861TO/2: Horizontal probe L=350 mm, sliding joint.
DO 9861TC/1-2: Probe L=150 mm, cable L=2 meters.
DO 9861TC/2-5: Probe L=350 mm, sliding joint, cable L=5 meters.
DO 9861TC/2-10: Probe L=350 mm, sliding joint, cable L=10 meters.
HD 75: 75% calibration saturated solution.
HD 33: 33% calibration saturated solution.
P 5: 50µ standard spare filter.
P 6: 10µ spare filter.
8
3 , gr/kg).