User Manual

E-M-HM4-V0_08
ROTRONIC AG
Bassersdorf, Switzerland
Document Code
Unit
HM4 Humidity and Temperature Probe with
Heated Sensor
Instruction Manual
Document Type
Page
29 of 41
Document Title
© 2014; ROTRONIC AG E-M-HM4-V0_08
8 Maintenance
This chapter describes calibration, adjustment, validation and filter changes as well as the tools necessary for
this, e.g. service cable.
8.1 Service Cable
The following two service cables may be used for maintenance and calibration:
AC3010 (USB-to-RS-485 converter) for devices with open ends
AC3010-T (USB-to-RS-485 converter) for devices with Tuchel connector
The cables have an internal power feed of 5 VDC. This suffices for calibration, device settings and the sensor
heating (RoHumiHeat), but not for the cleaning function (RoHumiClean) and analog outputs greater than 0...1V.
Remark:
An AC3011 cable (Ethernet – RS-485 converter) can also be used.
DRAFT