VIBRO-METER · IQS900 · PROXIMITY MEASUREMENT IQS900 204-900-000-011 A1-B21-C1-H10-I0 Vibro-Meter IQS900 signal conditioner for proximity measurement chains. Product identification and technical selection should be checked against the complete ordering code and installed measurement chain. 204-900-000-011 · A1-B21-C1-H10-I0 IQS900 Measurement Chain The IQS900 sits in the Vibro-Meter proximity measurement chain and conditions the signal before it reaches the machinery