Zero Point Adjustment (Autozero / Offset); Check Sensor Function; Enclosure; Technical Data - Helios EDR Installation And Operation Manual

Installation and Operating Specification EDR

7.6 Zero point adjustment (Autozero / Offset)

If the actual value is not "0 Pa Δp" in pressureless state a zero-point adjustment is
possible with fuction "Autozero".
This may be necessary, for example, in case of heavy thermal fluctuations in the sensor
environment or non-vertical mounting.
Procedure
1. Pull off the pressurised hoses.
2. Switch function "Autozero" in BASE SETUP to "ON" .
3. The display switches to the actual value display and the value "0" is displayed after
zero point calibration has taken place.
4. The necessary difference up to"0" is displayed in the BASE SETUP under "Offset".
Information
Alternatively to the automatic zero point calibration, the offset value can also be set
manually see BASE SETUP / Offset.

7.7 Check sensor function

1. Program Mode
2. Connect the voltage supply (+U
3. Remove pressure hoses and measure output signal, nominal = 0 V.
4. Create pressure at the "+" connection against the "-" connection (e. g. by carefully
blowing in), measure the output signal (0...10 V
5. If the sensor works, reconnect the pressure hoses and check these if necessary.

8 Enclosure

8.1 Technical data

Type
Part-No.
Voltage supply
Max. load output 0...10 V
(short-circuit-proof)
Max. current consumption ca.
L-BAL-E292-GB 1841 Index 001
for pressure sensor.
4.00
/ GND), disconnect output 0 ...10 V (A / GND).
S
EDR
01437
10...24 V DC (+20 %)
Protected against reverse polarity
@ U
0.3 mA
6 mA
Part.-No.
11/15
measuring range).
10 V DC
S
Enclosure
@ U 13...24 V DC
S
10 mA
14 mA