Dräger REGARD 2400 Instructions For Use Manual page 22

Maintenance
Converter Supply
Current
in mA
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
Adjusting the zero point
Apply zero gas to the sensor (e.g. synthetic air), which corresponds to ZERO (4 mA).
The output current can be checked with a voltmeter at the two test points on the left hand
side of the converter ("Measuring Point 4...20mA"). Alternatively you may refer to the dis-
play of the Dräger REGARD 2400, provided that the corresponding channel is configured
correctly.
Use the potentiometer ("Adjust sensor zero point") to adjust the voltage at the test point to
0.4 V (indication on the voltmeter).
The display of the Dräger REGARD 2400 shall indicate "0".
48
Voltage at Testport
for Converter
Current in V
1.248
1.253
1.258
1.263
1.268
1.273
1.278
1.283
1.288
1.293
1.298
1.303
1.308
1.313
1.318
1.323
1.328
1.333
1.338
1.343
1.348
1.353
1.358
1.363
1.368
1.373
Converter Supply Voltage at Testport
Current
in mA
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
for Converter
Current in V
1.373
1.378
1.383
1.388
1.393
1.398
1.403
1.408
1.413
1.418
1.423
1.428
1.433
1.438
1.443
1.448
1.453
1.458
1.463
1.468
1.473
1.478
1.483
1.488
1.493
1.498