About Us	Contact	Clients	Projects

Triple 4-20mA loop splitter - TIM018-Mk2

Improve the security of your shared 4-20mA loops. Designed and built by us in the UK. The TIM018-Mk2 triple loop splitter takes one 4-20mA input and creates 3 copies. Each output loop can be scaled separately.

Mark 2 triple output 4-20 mA transmitter

This new version of the TIM018 has these improvements over the previous model ...

1. Narrower case, allows denser packing
2. Wide range power supplies cover 95-265 VAC or 11-30VDC
3. Adjustments from the front panel
4. Detachable screw terminal connectors

All loops are load-isolated, so that a problem on one loop won't affect the others.

Look at the diagram below, here you see one transmitter feeding 4 receivers, all connected in series. If the line is broken, all devices loose their signal.

TIM018 triple loop splitter not fitted

Now look at the system with the TIM018 triple loop splitter included. If any of the receivers on the outputs of the TIM018 are disconnected, the other loops will still function correctly.

TIM018 triple loop splitter fitted

Manual... TIM018-Mk2 datasheet New!
Operating manual - new TIM018-Mk2 New!
Operating manual - obsolete TIM018 original

How to assemble a transmitter case

DIN Signal transmitters for load cell, process, pulse and temperature

High precision signal transmitters which are PC-programmable and only 22.5mm wide. We can also supply them pre-configured for you, so you only need to connect.

Signal transmitters and conditioners for load cell, process, temperature and pulse

They are ideal for use in most industrial measurements, catering for 4 or 6 wire load cells, 4-20mA and 0-10V process signals, DC voltages up to 600V and DC current up to 5A.

New: Ex nR Atex Displays

Atex and Ex nR certified explosion proof andons, digital panel meters, transmitters, bargraph displays and large digital displays

For hazardous areas we can offer the following explosion proof options on most models. Tell us what you need and we will be pleased to quote for Atex certified systems

Zone 1 ii 2 G Ex px iiC T6/T5/T4 Gb *
Zone 2 ii 3 G Ex nR iiC T6/T5/T4 Gc **
EXD Zone 2 on request - POA

* - Requires pressurised air system
** - any product

The London Electronics ATEX certified products are supplied certified for use in the condition in which they are supplied. No liability will be assumed for any loss or damages of any nature, direct or indirect, including any loss of profits or consequential damages, injury or death suffered or incurred by the buyer as a consequence of failure to install, use and/or apply the product within the scope of the installation document and certification supplied.

They also include pulse input versions for total, rate, period, phase angle and quadrature.

Models:

LT Series, made in USA

Load Cell input transmitter with 4-20 mA, 2 alarm & RS232/RS485 output

4 or 6 wire load cell connection. 10v 120mA Excitation supply.
5V at 100mA is user selectable.
LT20-WM1 = 85-265V AC, standard software
LT21-WM1 = 10-48V DC, standard software

DC input transmitter (4-20mA, 0-10V, 1-5V, 5A, 600V) with 4-20 mA, 2 alarm & RS232/RS485 output

5 selectable voltage input ranges from 0-200mV to 0-600V and
4 selectable current input ranges from 0-2mA to 0-5A
LT20-P = 85-265V AC, standard software
LT21-P = 10-48V DC, standard software

PT100 input transmitter with 4-20 mA, 2 alarm & RS232/RS485 output

LT20-385C = 85-265V AC, standard software
LT21-385C = 10-48V DC, standard software

Pulse input rate/total transmitter with 4-20 mA, 2 alarm & RS232/RS485 output

LT60-FR = 85-265V AC, standard software
LT61-FR = 10-48V DC, standard software

Serial input RS232/485 transmitter with 4-20 mA, 2 alarm & RS232/RS485 output

LTS60 = 85-265V AC, standard software
LTS61 = 10-48V DC, standard software

Thermocouple input transmitter with 4-20 mA, 2 alarm & RS232/RS485 output

LT20-KC = 85-265V AC, standard software
LT21-KC = 10-48V DC, standard software

Change suffix to suit different thermocouple types...
EC = Type E, Celcius
JC = Type J, Celcius
KC = Type K, Celcius
NC = Type N, Celcius
RC = Type R, Celcius
SC = Type S, Celcius
TC = Type T, Celcius

Dimensions

Connections

Common Specifications

Analogue Output (standard)
Output Levels	4-20 mA, 0-20 mA, 0-10 Vdc, -10 to +10Vdc (user selectable)
Compliance at 20 mA	10V (0-500Ω load)
Compliance at 10V	2 mA (5 kΩ or higher load)
Output Resolution	16 bits (65,536 steps)
Output Accuracy	0.02% of output span plus conversion accuracy
Output Isolation	250V rms working, 2.3 kV rms per 1 minute test
Step response time	50 ms
Serial Data Output (standard)
Signal Types	RS232 or RS485 (half or full duplex), jumper selectable
Data Rates	300, 600, 1200, 2400, 4800, 9600, 19200 baud
Output Isolation	250V rms working, 2.3 kV rms per 1 min test
Serial Protocols	Modbus RTU, Modbus ASCII, Laurel ASCII
Modbus Compliance	Modbus over Serial Line Specification V1.0 (2002)
Ethernet Connector	RJ45 jack for 10/100 Base-T Ethernet cable
RS232/485 Connector	Screw terminals for easy daisy chaining
Digital Addresses	247 for Modbus, 31 for Laurel ASCII
Dual Relay Output (standard)
Relay Type	Two solid state relays, SPST, normally open, Form A
Load Rating	120 mA at 140 Vac or 180 Vdc
Power Input
Standard Power	85-264 Vac or 90-300 Vdc (DC operation not ETL certified)
Low Power Option	10-48 Vdc or 12-32 Vac
Power Frequency	DC or 47-63 Hz
Power Isolation	250V rms working, 2.3 kV rms per 1 min test
Power Consumption	2W typical
Mechanical
Dimensions	129 x 104 x 22.5 mm case
Mounting	35 mm rail per DIN EN 50022
Electrical Connections	Plug-in screw-clamp connectors
Environmental
Operating Temperature	0°C to 55°C
Storage Temperature	-40°C to 85°C
Relative Humidity	95% at 40°C, non-condensing
Cooling Required	Mount transmitters with ventilation holes at top and bottom. Leave 6 mm (1/4") between transmitters, or force air with a fan.

Programming the transmitters

We offer free setup software for use on Windows PCs. You will need a cable from your PC to the RS232 port of the transmitter.

We offer a direct RS232>Transmitter cable, model CBL04, or, if your PC doesn't have an RS232 port, you can use our CBL02 USB>RS232 converter cable in addition to the CBL04 cable.

Signal transmitter programming cable

You can download the setup software [here]

Self powered 4-20 mA loop isolator P17G

The P17G is a compact, high precision loop isolator, made in Poland, which does not need an external supply. It takes its power from the 4-20mA input signal.

P17G self powered 4-20mA loop isolator

Specifications

Conversion error	+/- 0.2% of the range
Thermal error	+/- (0.05 % of range /10C)
Load error	+/- (0.15 % range/100 Ohms)
Conversion bandwidth	70 Hz
Isolation	500V DC - 50Hz 1 minute
Operating temperature	-20 to 55oC
Storage temperature	-25 to +85oC
Humidity	<95% non condensing
Operating position	any
Sustained overload capacity	40mA
Sealing	IP50 (housing) / IP20 (electrical
Weight	80 g
Mounting	DIN rail acc. to EN 60715
Analog input	4...20 mA
Input voltage drop	Iin x Rload out x 1.25
Output load	(Rload) < 500 Ohms
Installation category	III
Pollution grade	2

P17G loop isolator manual New!
Datasheet: 1 channel version
Datasheet: 2 channel version