Endress+Hauser TMD 834 Betriebsanleitung Seite 42

Chapter 4 Operation
Output
Input
42
Field Parameter
V0H0 Process variable
(read only)
V0H1 Cold junction temperature
(read only)
V0H4 Measure filter
0...30 sec
Field Parameter
V1H0 Hardware configuration
mV - 0/400 Ω - 0/4000 Ω
V1H1 Input sensor selection
V1H2 Engineering unit
°C - °F - °K - mV - Ω
V1H3 Operating strategy
V1H4 Bias channel 1
temperature: ±10.0 °C/°K/°F
mV : ± 0.100 mV
0/400 Ω : ±1.00 Ω
0/4000 Ω : ±10.0 Ω
V1H5 Resistance wire connection
2 wires - 3 wires - 4 wires
V1H6 2-Wires Compensation
Significance
Process variable in engineering unit, corrected by bias value
entered in field V1H4.
In case of error the PV value will be 9999.9 or - 9999.9
Temperature of cold junction in engineering units.
In case of error the value indicated will be 99.9.
This is the first order time constant expressed in seconds, to
filter the input signal.
Significance
Selection of input type, voltage or resistance.
Note that when a value below 1 W is applied to the input, a
sensor error is detected (sensor short circuit).
In this location the type of sensor connected to the input must
be specified. The available sensors are indicated in the
technical data section. If linear sensor is selected, the output
value V0H0 will be directly indicated in mV or in Ω, according to
selected hardware configuration of V1H0.
Selection of engineering unit. The selected unit is applied to the
following fields: V0H0-V0H1-V0H3-V1H4-V2H0-V2H1-V2H3.
This parameter at the moment is set to fixed value. Future use.
Value that can be algebraically added to process temperature
to compensate for installations where the sensor cannot be
placed exactly where the measurement is needed, or to correct
drifts due to sensor aging. If "linear " is chosen in field V1H1,
applicable bias value will be different for mV, resistance range 1
or resistance range 2.
Connection to the sensor, applicable to RTD and resistance.
Value in Ohm to compensate line when the thermoresistance or
resistance is connected with 2 wires configuration. The value to
be inserted is the resistance of the connection wires, with
0.01 Ω resolution.
TMD 834