DS200 Combined Pressure Switch, Gauge and Sensor

Three in one electronic pressure switch, digital pressure gauge and pressure sensor with pressure ranges from 100 mbar up to 600 bar (1.5 to 9000 psi) gauge or absolute.

Contents

Product Parameters

Pressure Ranges: 100 mb up to 600 bar (1.5 – 9000psi) gauge or absolute
Accuracy: 0.35%FS standard with option for 0.25%FS IEC60770 (analogue output)
Output Signals: 4-20mA 2 wire, 0-10V 3 wire and Adjustable 4-20mA 3 wire
Electrical Connections: DIN43650A plug & socket, cable gland, Binder 5 pin, M12 x 1 5-8 pin plastic or 5pin metal connector
Pressure Connections: G1/2 and G1/4 DIN3852 or EN837, G1/2 and G3/4 DIN3852 flush, 1/2 and 1/4 NPT male
Display: 4 digit red LED, 0.1% FS +/- 1 digit accuracy plus analogue output accuracy
Switch Contacts: PNP, 125mA max for 4-20mA (2 or 3 wire) and 500mA max for 0-10V output.
Environmental Protection: IP65
Special Options: 5 to 1 rangeable, Ex approved intrinsic safety, all welded wetted parts

Product Description

The DS 200 combined pressure switch, gauge and sensor is externally powered via the analogue signal electrical connection and pressure can be displayed in any engineering units via the 4 digit LED display. A variety of analog output signals maybe specified and a choice of 1 or 2 PNP contacts for use as alarms or for controlling pumps and valves.

Special product features include a turndown ratio of 5 to 1 for the 3 wire 4-20mA output version for flexibility when stocking spares and an ATEX approved version of the 2 wire 4 to 20 mA output version for hazardous area applications.

Product Help

Vacuum alarm at -100 mbar

We are looking to show an alarm when vacuum pressure falls below -100 mbar, this need not be an electronic sensor, in this application it can be a switch that will activate at -100 mbar. Also if it would need to be ATEX rated.

The DS200 has an ATEX rated option, and it will provide a PNP switch output along with the 4-20mA signal output.

SKU ID: s1-ds200-78-21569
Pressure Range: 0 to -200
Units: mbar
Range Type: Negative Gauge/Suction (atm to -P)
Output Signal: 4-20mA, ATEX IS, (2 wire)
Accuracy: 0.5% FS (11-12bit resolution)
Switch Output: 1 PNP switch
Electrical Connection: DIN plug (1 switch, 4-20mA 2 wire only)
Process Connection: G1/4 DIN3852 male
Process Connector Material: Stainless steel 316L
Diaphragm Material: Stainless steel 316L
Media Exposed Seals: FKM

Outdoor installation

Can this sensor gauge be used for outdoor installation?

Yes the DS 200 sensor gauge is IP65 rated:

Solids: Total dust ingress protection
Liquids: Protected against low pressure water jets from any direction

Design temperature

Is the maximum media temperature the design temperature?

There is no design temperature specified, only the ones mentioned below which should not be exceeded to ensure expected performance, and in the case of zone 1 safe operation.

There are four max temperatures to consider:

Media or process temperature: 125degC
Ambient environment temperature: 85degC OR Intrinsically safe zone 1 ambient environment temperature (Tamb): 70degC
Storage: 100degC

Hygienic flush diaphragm

Is the G1/2 DIN 3852 with flush sensor option hygienic?

Although it is stainless steel 316, the diaphragm is not welded to the process connection which would otherwise discourage the bacteria and fungus growth. There is a small crevice running around the outer diameter of the diaphragm where it is sealed using an FKM seal, some way inside the assembly. Also a threaded fitting exposed to the media will also contain crevices which will attract contaminants. For a a true hygienic flush diaphragm we would suggest to consider the DS 200P instead.

Delay Time

What is meant by the ‘Delay Time’ on the DS200 data sheet?

The “Delay Time” refers to a selectable period of time from 0 to 100 seconds that can be placed between the event of reaching a setpoint and executing the triggering of the switch.

Switching Frequency

What is meant by the ‘Switching Frequency’ on the DS200 data sheet?

The “Switching Frequency” of 10Hz maximum indicates the maximum dynamic response of the on / off switching when executed.

Switching Cycles

What is meant by the ‘Switching Cycles’ on the DS200 data sheet?

The “Switching Cycles” of 100 x10e6 refers to the design life of the electronic switch.

Nitrogen cylinder pressure drop

We require a combined pressure gauge and switch to monitor Nitrogen cylinder pressure. The Nitrogen cylinder is pressurized to 200 bar, and when pressure drops below 180 bar we require the pressure switch to change state. The deive also needs to be ATEX approved for intrinsic safety.

We would suggest the following DS200 specification for your Nitrogen cylinder pressure drop application.

SKU ID: s1-ds200-0001
Part No: 780-2503-E-1-3-100-100-1-000
Pressure Range: 250
Units: bar
Range Type: Positive Gauge (atm to +P)
Output Signal: 4-20mA, ATEX IS, (2 wire)
Accuracy: 0.35%FS (11-12bit resolution)
Switch Output: 1 PNP switch
Electrical Connection: DIN plug (1 switch, 4-20mA 2 wire only)
Process Connection: G1/2 DIN3852 male
Process Connector Material: Stainless steel 316L
Diaphragm Material: Stainless steel 316L
Media Exposed Seals: FKM

Zero point setting with compound range

Is there is a way of setting the zero point on the DS200 with a compound range of -100 to +100mbar?

You can adjust the offset compensation (special menu 2 – [oF S]) & full scale compensation (special menu 1 – [FS S]), you will need a reference pressure for each to do this though.

Bear in mind that when conducting the offset compensation you will adjusting -200 mbar not 0.

It is hard to get the 0 mbar to read exactly zero because of the non-linearity between 0-100% span.

Request Product Price

Please select the options you require for the DS200 Combined Pressure Switch, Gauge and Sensor in your application and request a quote.