The loop telemetry kit: one part number
Ask for the specification sheet
Two sensors bought separately carry two tolerances, and tolerances add. The kit ships one matched pair on one record.
What the part number contains
| Measured quantity | Included instrument | Sizing value |
|---|---|---|
| Supply and return temperature | Matched pair, EMS-TL-ST | −40 to +150 °C |
| Flow | EMS-TL-SF electromagnetic, EMS-TL-SFU ultrasonic | DN25 0.5–18 m³/h |
| Differential pressure | EMS-TL-SDP, filter and loop ranges | 100 kPa and 400 kPa |
| Liquid level | EMS-TL-SL, point switch plus analogue reservoir | Optical reflective prism |
| Leak detection | EMS-TL-SK channel, ropes from the EMS-LD- line | 4-wire detects and locates |
The pairing is auditable
Same bath, reference and session, two serials on one sheet.
Element class named as IEC 60751 Class A.
One replacement sensor returns the loop to two tolerances.
ΔT uncertainty goes back above 50 %.
Two channels, as a production CDU carries water-inlet and water-return.
Both read on one gateway.
Four codes, four loop classes
| Code | Loop class | Flow to cover | Added |
|---|---|---|---|
| EMS-TL-K100 | Single rack, 100 kW | 10–100 L/min | flow run, DP 100 kPa, 1 leak |
| EMS-TL-K300 | Row, 100–300 kW | 20 GPM (≈75 L/min) | DP 400 kPa, 2 leak |
| EMS-TL-K800 | Row, to 800 kW | 90 GPM | analogue level |
| EMS-TL-K2300 | Room 2.3 MW | Up to 340 GPM | 4 leak, 2 flow runs |
Which flow instrument goes in the kit
| EMS-TL-SF electromagnetic | EMS-TL-SFU ultrasonic | The fluid decides |
|---|---|---|
| Needs 5 µS/cm | No minimum | Glycol premix, 50–300 µS/cm |
| ±0.5 % of reading, ±0.2 % special | Quoted on request | De-ionised, 0.2–20 µS/cm |
| 0.5–18 m³/h, ≈36:1 turndown | In-line beats clamp-on at low flow | 1.68 mPa·s at 15 % PG, 8.20 at 55 % |
| 5× DN upstream, 3× DN downstream | same rule | omitting them costs 1.5 % of reading |
Under the 5 µS/cm floor the electromagnetic meter reads near zero without raising a fault flag.
Differential pressure is the filter's real-time signal
Transmitter accuracy is percent of full scale: ±0.075 % FS. Elements from coolant filtration.
Capture a baseline in the first 24 hours
Capacity cannot be computed from ΔT alone.
- Step 01Log ΔT and flow at commissioning, then at first load2 log points
- Step 02Purge: pumps 25–30 % for 30 minutes, +10 % every 15 minutes to 75 %15 % minimum
- Step 03Level channel second opinion: fill-pump activity over 5 s raises A30A30
- Step 04Record the fluid volume the baseline applies to5.7 L secondary
Four datasheets
The instruments insideEMS-TL-K100
Flow run, DP 100 kPa, 1 leak.
EMS-TL-K300
Adds DP 400 kPa, 2 leak.
EMS-TL-K800
Adds analogue level.
EMS-TL-K2300
Adds 4 leak, 2 flow runs.
Each kit datasheet carries 14 or more rows, including the matched-pair and straight-run rows.