Technical Data


Size and weight

Dimensions (H/W/D) 72 x 128 x 174 mm / 2.8 x 5 x 6.9 in
Weight 905 g / 2.0 lb (ES630), 920 g / 2.03 lb (ES635)
1055 g / 2.33 lb (ES631), 1085 g / 2.39lb (ES636)


Temperature range -40 °C to +70 °C (-40 °F to +158 °F) (operation)
-40 °C to +85 °C (-40 °F to +185 °F) (storage)
Altitude Up to 5.000 m / 16,400 ft
Tested for Mechanical shock, vibration, fall, temperature shock, temperature alteration according to DIN EN 60068 res. ISO 16750

Power supply module

Operating voltage 6 V to 50 V DC
Power consumption (at 13.5 V DC) 6.5 W typ. (ES630/ES635)
7.5 W typ. (ES631/ES636)

Power supply sensor heater

Operating voltage 9 V to 28 V DC
Power consumption (at 13.5 V DC) 9 W typ. (one LSU 4.9 sensor exposed to air, ES630/ES635)
18 W typ. (two LSU 4.9 sensors exposed to air, ES631/ES636)

Sensor interface

Channels 1 (ES630/ES635) / 2 (ES631/ES636), including control and supply of sensor heater
Supported lambda oxygen sensors Bosch LSU 4.2, LSU 4.7, LSU 4.9, LSU 5.1, LSU ADV-G, and NTK ZFAS®-U2
Sensor connection The different oxygen sensors are connected by different adapter cables to the ES63x modules. The sensor
type is coded in the adapter cable or the sensors of type LSU ADV and LSU 5.1 delivered by ETAS. The
sensor type will be automatically detected by the modules.
Measurement signals and ranges[1] Lambda λ: 0.6 to 16
1/λ: 1.67 to 0.0625
Air-fuel ratio A/F: 8.5 to 200
Fuel-air ratio F/A: 0.005 to 0.118
Oxygen content O2: 0 % to 25 %
Pump current Ip of the λ sensor: -10 mA to 10 mA
Ambient pressure Pamb: 600 hPa to 1150 hPa
External pressure sensor Pext (ES631/ES635): 500 hPa to 3000 hPa
Measurement sampling rates 0.5 Samples/s to 2 kSamples/s
Pamb: 1 Sample/s
Monitoring signals and ranges Internal resistance of the Lambda sensor Ri: 0 Ohm to 2000 Ohm[1]
Temperature of sensor ceramic Tcer: 500°C to 1000°C
Monitoring sampling rates 0.5 – 20 Samples/s

Oxygen sensor supply and control

Sensor heater
supply and control
Configurable for each channel, possible to keep sensor at operational temperature also when module is off
Heater supply 0 V to 18 V / typ. 5 A
Heatup curve Output voltage configurable in equidistant steps by use of a csv-file. Width of the steps is a multiple of 50 ms. Maximum step width: 500 ms
Pump current controller Programmable for adaptation on future sensors


Type Dot matrix vacuum fluorescence display (128 x 64 pixels)
Layout Display of 2 signals plus status message
Keyboard On front panel, 6 keys: 4 x softkey, 1 x forward, 1 x backward

Analog output

Channels 1 (ES630/ES635) / 2 (ES631/ES636), electrically isolated
Output voltage 0 V to 10 V
Output signal λ, 1/λ, A/F, F/A, O2, Ip, Pamb, Ri, or Tcer, configurable by software
Output impedance Virtually 0 Ohm, short circuit protected and protected against external voltages of up to 28 V
Output current max. 10 mA

Host interface

Ethernet 100 Mbit/s Base-T Ethernet, Full-Duplex required, XCP-on-UDP/IP protocol, for each input channel measurement signals of different type can be provided concurrently to host system
IP address Dynamic via INCA or configuration tool (default
RS-232, SMB protocol 38400 bit/s, 8 bits in parity, 1 stop bit

Support by ETAS Software

Supported by INCA V6.2.1 (ES63x) / INCA V7.1 (ES63x with LSU 5.1 probe) and up by add-on (part of the ES63x delivery), INTECRIO V4.0 (ES63x) and up, ASCET-RP V6.1.3 (ES63x ) and up, HSP V10.5 (support of the LSU 5.1 probe by ES63x) and up, ES63x configuration and integration tool for XCP applications, universal driver for integration into third-party software applications
without XCP interface (V1.5.0 and up)

Compatible ETAS compact hardware modules

Prototyping and Interface Module ES910, Network and Interface Modules ES51x and ES59x, Network Module ES600, Micro Measurement Modules ES4xx


[1] Minimum values, actual values depend on the characteristic curve of the individual lambda oxygen sensor.

This product has been developed and released for use in automotive applications. For usage in other domains please contact your ETAS representative.