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Wellsite monitoring solutions (WMS)

James Fisher Strainstall's wellsite monitoring solution (WMS) augments existing wellsite sensors with smart, hazardous area certified wireless functionality to improve operational safety and provide highly accurate data.

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Wellsite monitoring applications

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 WMS-wireline  WMS-slickline  WMS-pressure monitoring  Other applications





Augment existing sensors with hazardous area certified smart, wireless functionality

Wellsite monitoring solutions (WMS) removes the need for cabled sensors during well intervention operations, directly improving on-site safety and the efficiency of your wellsite. WMS makes existing wellsite sensors wireless and smart by utilising proven and certified sensors augmented to improve safety and create operational efficiencies in hazardous areas.

Improved wellsite safety

Originally developed in conjunction with a major oil and gas service company to remove trip hazards, decrease rig up time and reduce costs during wireline operations - WMS delivers improved wellsite safety and efficiency across a broad range of wellsite applications.

No need for IECEx recertification

JF Strainstall’s modular, globally hazardous area certified wireless system integrates with almost any type of third party Ex rated sensor, without the need for IECEx recertification.

Leveraging data capture and processing capabilities with IoT

As well as improving site safety and driving efficiencies, JF Strainstall’s wireless monitoring solution provides new opportunities to measure, control and improve wellsite processes using Internet of Things (IoT) style data capture and recording time/date stamped sensor data for subsequent analysis, as well as providing greater visibility of wellsite operations to exploration and production (E&P) operators.

Global hazardous area certification offers full confidence to operators

Globally certified hazardous area technology eliminates the need for cables. The removed cost of replacement cables quickly returns the investment for WMS systems. And with RF-safe status, WMS can be used around all commercially available electric detonators.

Keep the sensors you trust

Augment with WMS to gain wireless, digital logging, data to desk, data to cloud, plug and play benefits that continue to add value year on year. JF Strainstall sensors can even be retrofit during routine downtime to minimise disruption to operations.

As low as reasonably practicable (ALARP) risk mitigation

The WMS system has a tangible payback period, clearly increases safety, and was requested, co-developed and adopted by a top tier global service company. Addressing risk reduction is now a decision.  



WMS uses a battery powered wireless module that logs data while simultaneously transferring data to a range of displays, from digital handheld units, to local networks and analogue gauges.

JF Strainstall's ATEX, IECEx and North American Hazloc approved wireless sensor systems can be used in any application with a monitoring requirement, such as; pressure, load, level, flow, torque, stroke counters and a variety of other measurements.

The dual channel wireless setup ensures connectivity at all times and eliminates any need for expensive replacement cables.


  • Wireless technology
  • Hazardous area certified (Zone 1, 2, ATEX, IECEx and North American Hazloc)
  • Direct replacement of existing load cells
  • Integrated without system modifications
  • Interfaces to any system
  • Output via voltage, serial, Ethernet or bespoke
  • Data to server capable
  • Data logging directly on the load cell
  • Input k-factor at load cell
  • User configurable overload / max pull alarm
  • Radio frequency (RF) detonator safe tested

JF Strainstall's wellsite monitoring solutions have been specifically developed for today's modern digital oilfield to ensure accurate and safe monitoring.

The dual channel wireless setup ensures connectivity at all times and by eliminating the need for cables and cost of cable replacements, the system rapidly repays the investment.


  • Reduces risk of trip hazards
  • Eliminates the need for cables
  • Improved accuracy
  • No change to existing sheave set up
  • Lowers risk of NPT
  • Post-job data analysis
  • Reduces rig-up time
General radio  
Radio type Transceiver (two way)
Frequency 2.4 GHz
Transmit power 63mW
Range 250m (clear line of sight)
Operating temperature range  -20◦C ≤ Ta ≤ +40◦C
IP rating IP 66
Calibration 10 point
Resolution 24 bits
Data storage (Built-in) 8GB (365 days)
Load rating As required
Battery Alkaline D cell
Battery life 21 days
Operating temperature range -20◦C ≤ Ta ≤ +40◦C
 IP rating  IP 66
 Battery   Alkaline AA cell
 Battery life  30 hours (continuous)
 Receiver unit  
 Operating temperature range   -20◦C ≤ Ta ≤ +40◦C
 IP rating  IP 66
 Power supply  24 Vdc 100mA
 Wall Mounted Display (Safe area)   
 Display Backlight LCD
 Power supply 24Vdc 500mA


Serial (rs232, rs485)

Analogue (4-20mA)

 IP rating IP 66
 Wall mounted display (Zone 1)  
 Display Backlight LCD
 Power supply 24Vdc 500mA
 Connectivity  Ethernet

Serial (rs232, rs485)

Analogue (4-20mA)

IP rating IP 66




Ex ib IIB T4 Gb (-20°C ≤ Ta≤ +40°C)
Ex ic IIB T4 Gc (-20°C ≤ Ta ≤ +40°C)
Class I, Division 2, Groups C-D, T4
(-20°C ≤ Ta ≤ +40°C)


Ex ib IIB T4 Gb (-20°C ≤ Ta ≤ +40°C)
Ex ic IIB T4 Gc (-20°C ≤ Ta ≤ +40°C)

AEx ib IIB T4 Gb (-20°C ≤ Ta ≤ +40°C)
Class I, Division 2, Groups C, D, T4
(-20°C ≤ Ta ≤ +40°C)

Receiver unit

Ex ec mc IIB T4 Gc
(-20°C ≤ Ta ≤ +60°C)

Class I, Division 2, Groups C-D, T4
(-20°C ≤ Ta ≤ +60°C)
Class I, Zone 2, IIB T4 T4
(-20°C ≤ Ta ≤ +60°C)