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Sensors

Highest process stability during operation

The monitoring of various parameters in the server racks is done by specific sensors by EMKA Electronics. The sensor program of EMKA Electronics includes all relevant parameters for measuring and monitoring the operating statuses of server racks. The measured data are centrally captured and analysed. They can trigger alarms, switch on fans or air conditioning units or effect the emergency opening of the rack doors when user-defined limits are exceeded. In combination with the software Control Cockpit, the data provide a basis for increasing the energy efficiency of data centres.

EMKA Process stability

Climate sensor

The analogue climate sensor measures both the air humidity and the ambient temperature. The sensor is connected to the Sensor Unit.

Techn. Data

Power supply: 7.5 ... 27 VDC (provided by  ELM system)
Power requirement: approx. 0.8 mA
Measuring range humidity: 0...100 % relative humidity
Deviation: 20...80 % relative humidity
Settling time  < 4 sec.
Output humidity: 0.5 ... 5.5 V
Measuring element: capacitive, (condensation-proof)
Measuring range temperature: -20...+80 °C
Deviation: ± 0,5 K at 25 °C
Settling time: < 20 sec
Output temperature: 0.5...5.5 V
Measuring element: semi-conductor
Dimensions (L x B x H): 65 x 31 x 22 mm
Cable length: 2 m
Plastic housing with two mounting holes

 

Item no.
Connecting cable with open wire ends: 3000-U25-00
Connecting cable with plug:3000-U25-01
EMKA Climate Sensor

Temperature sensor

The analogue sensor is suitable for monitoring temperatures of both gaseous and liquid media. The sensor is connected to the Sensor Unit.

Techn. Data

Power supply: +12 V ±10 %
Power requirement: approx. 0.8 mA
Measuring range temperature: -50...150 °C
Deviation: < 2 %
Output voltage at -50 °C: 0.25 V
Output voltage at 150 °C: 4.75 V
Dimensions diameter x L: Ø 6 mm x 50 mm
Cable length: 2 m
Housing of stainless steel

Item no.
Connecting cable with open wire ends:3000-U39-00
Connecting cable with plug:3000-U39-01
EMKA temperature sensor

Smoke sensor

Optical smoke sensor with VdS certification G29219. The sensor is connected to the Sensor Unit. In non-operating state the sensor delivers an output signal of approx. 400 mV. When detecting smoke the signal jumps to over 1,800 mV.

Techn. Data

Power supply: 8 ... 28 VDC (provided by  ELM system)
LED: is lit red in case of alarm
Dimensions diameter x H: Ø 90 mm x 72 mm cable length: 3 m
Plastic housing with two mounting holes

Item no.
Connecting cable with open wire ends:3000-U34-00
Connecting cable with plug:3000-U34-01
EMKA smoke sensor

Vandalism sensor

This analogue sensor can be used in safety-related applications to protect against vandalism, destruction and theft. It measures accelerations in an axis. The sensor is connected to a Sensor Unit.

Techn. Data

Power supply: 7.5 ... 15 VDC (provided by  ELM system)
Power requirement: approx. 2 mA
Measuring axis: Z axis measuring range: ± 5 g
Output voltage at 0 g: 2.5 V ± 0.25 V
Sensitivity: (0.4 ± 0.02) V/g
Nonlinearity: ±1.0 % FSo
Band width: 50 Hz
Overload-safe up to 1500 g
Measuring element: capacitive
Operating temperature: -40 ... +70 °C
Dimensions (L x B x H): 65 x 31 x 22 mm cable length: 2 m
IP rating: IP65
EMC and ESD certified: EN 50082-1 EN 50082-2
Plastic housing with two fixing holes

Item no.
Connecting cable with open wire ends:3000-U38-00
Connecting cable with plug:3000-U38-01
EMKA vandalism sensor

Current and voltage sensor

Current sensor 2 x 16 A

The current sensor is typically used in the power distribution of machine or data cabinets. The dimensions are 35 x 80 x 40 mm (B x H x T). It is suitable for top hat rail mounting. The sensor has 2 inputs for 0 ... 16 A AC via terminals 2.5 mm. The connection to a Sensor Unit is done via an RJ45 patch cable with subsequent adapter cable 3000-U37-x. The power supply is 12 V DC, the output signal 0 ... 4 V DC The sensor is connected to a Sensor Unit.

Item no.
Current sensor 2 x 16 A3000-U36-00

 

Current sensor 32 A AC

Same make as current sensor 2 x 16 A, but with measuring range 1 x 0 ... 32 A AC via terminals 4 mm².

Item no.
Current sensor 1 x 32 A3000-U36-05

 

Voltage sensor 240 V AC

Sensor for measuring the system voltage with measuring range 1 x 0 ... 240 V AC via terminals 4 mm².

Item no.
Voltage sensor 240 V AC3000-U31-00
EMKA current and voltage sensor

Flat reed contact as door switch

The digital sensor is used to monitor door states and side walls in combination with the Rack Management  System. The sensor is connected to the handle modules (Access Units).

Techn. Data

Dimensions (L x B x H): 60 x 11 x 9 mm
Cable length: 6 m
Plastic housing with two fixing holes; loose side with permanent magnet

 

Item no.
Connecting cable with open wire ends:3000-U35-00
Connecting cable with plug for modules:3000-U35-01
EMKA Flat reed contact as door switch