Zen Datalogger 16 Channel Datalogger

Zen Datalogger 16 Channel Datalogger

With SD Card & Isolated Universal Input

Additional information

Weight 2.037 kg
Dimensions 15.3 × 27.3 × 6.7 cm
Power Supply

HV – 85-265V AC / 95-370V DC
MV – 24-48V AC / 17-72V DC

Port 1 Configuration

RS – RS422/485
EMOD – Ethernet Modbus

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What it does

Enables sophisticated monitoring, control and data logging of up to 16 input signals from a variety of sources

Easy DAQ and onboard data logging

Get all your data acquisition (DAQ) requirements fulfilled with the Zen Datalogger. It logs data onto a 1GB micro SD card, so you can physically take your data with you or route it to other hardware.

Data visualization and graphing helps you understand your data

If logging data is vital to your application then you’ll know that interpreting that data is just as vital. The Zen Datalogger gives you a simple way (via WorkBench software) to plot graphs and visualize your data for a better understanding of your results.

“We’ve had a Define data logger in operation for more than a year now and it has been running flawlessly since the day of commissioning.”

Columbus Steel

Enjoy the flexibility of universal inputs

Like its predecessor (ZEN-16) the Zen Datalogger accepts TC, RTD, mA, mV, V, Frequency and Counter and shares many of its capabilities. This means you can reduce the number of separate instruments you need for your application, keeping things simple for maintenance and troubleshooting.

Everything You Need:

  • 16 isolated channels
  • 4 digital inputs, 2 analog ouputs, 2 relay outputs
  • RS232/RS485 and RS422/R485
  • Ethernet Modbus
  • HMI interface
  • Expansion option to Zen RIO

Compare top brand data loggers

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DataTaker DT80
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Novus Field Logger
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SD card
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16 universal Yes RS232, RS485, Ethernet, USB Yes, free 1GB
SD card
LV/HV Remote $1364
Omega OMB DAQ 2416
16 TC or 4-20mA No RS232, RS485, Ethernet, USB Yes, free 1GB
LV/HV No $1214
Next Industries NI-816
16 universal No RS232,RS485, Ethernet, USB Yes, free 2GB
LV/HV Yes, attached $999

Try Before You Buy!

Use the product simulator inside our free WorkBench software to demo how this instrument works.

Bridge Key Required!

In addition to this software a Bridge Key is required for the configuration of this product.

You must order one unless you already have one from a previous product purchase.

5 Year WarrantyRCM E2180CE
5 Year WarrantyRCM E2180CE



Number of input channels: 16

Input configuration: Isolated universal inputs: Current, Voltage, RTD, Thermocouple, Potentiometer, Digital Pulse, Current Sensor or Attenuator input

See below for input specifications for each input type

Input isolation: 2,500V AC for 1 minute between all input channels

Isolation test voltage: 1000V DC for 1min between analog input channels, and between analog inputs and digital outputs

Resolution: 16 bits

Accurate to: <±0.1% fso (unless otherwise stated for specific input)


Power supply: HV= 85–265V AC / 95–370V DC, OR MV= 24–48V AC / 17–72V DC

Supply frequency: 50/60Hz, 10VA

Mains isolation: 250V AC

Isolation test voltage: Mains isolation test voltage 3000V AC 50Hz for 1min to all inputs and outputs

General Specifications

Accurate to: <±0.03% FSO typical

Noise immunity: (CMRR) 160dB tested at 300V RMS 50Hz

RF immunity: <±1% effect fso

Permanent memory: (E²ROM) 100,000 writes per input parameter

Linearity & repeatability: <±0.1%

Channel Separation: 125db minimum

Thermocouple Input

Thermocouple types: B= 32 to 3272°F (0 to 1800°C) E= -328 to 1292°F (-200 to 700°C) J= -328 to 1832°F (-200 to 1000°C) K= -328 to 2300°F (-200 to 1260°C) N= -328 to 2372°F (-200 to 1300°C) R= 32 to 3092°F (0 to 1700°C) S= 32 to 3092°F (0 to 1700°C) T= -328 to 752°F (-200 to 400°C)

Input impedance: >500KΩ min

T/C lead resistance: 100Ω max

Cold junction compensation: 14 to 140°F (-10 to 60°C)

CJC error: <0.02°c typical for all

Accuracy: 0.1% of FSO±1°C typical

Sensor open: Upscale

RTD Input

RTD input type: Pt100 3 wire RTD DIN 43760: 1980 Pt1000 3 wire RTD standard

Range: -328 to 572°F (-200 to 300°C), 0.02°F (0.01°C) resolution,-328 to 1472°F (-200 to 800°C), 0.1°F (0.1°C) resolution

Lead wire resistance: 10Ω/lead max recommended

Sensor current: 0.6mA continuous

Sensor fail: Upscale

Accuracy: -328–572°F (-200–300°C) = ±0.1°C -328–1472°F (-200–800°C) = ±0.3°C

Ambient drift: 0.003°C/C typical

Current Input

Range: 0–20mA, 4–20mA

Input impedance: 45Ω

Max over-range: Protected by PTC to 24V DC

Linearity & repeatability: 0.1% FSO max

Accuracy: 0.1% FSO max

Channel separation: 0.001% max

Ambient drift: 0.003%/°C FSO typical

RF immunity: 1% effect FSO typical

Fail safe micro switch: Prevents external loops from being interrupted in the event of a power loss to the Zen

Voltage Input

Ranges: ±200mV, –200mV to 1V, 0–10V, 0–18V

Input impedance: >500KΩ on all ranges

Maximum over voltage: 24V DC

Linearity & repeatability: 0.1% FSO max

Accuracy: 0.1% FSO max

Channel separation: 0.001% max

Ambient drift: 0.003%/°C FSO typical

RF immunity: 1% effect FSO typical

Digital Pulse Input

Frequency range: 0–2500.0Hz

Fast counter range: 0–2500.0Hz

Sensors: Open collector (NPN, PNP), TTL or Clean Contact

Frequency resolution: 0.1Hz

Frequency resolution: 0.1Hz

Debounce counter range: 0–50Hz max

Counter register output: 32 bit

Accuracy: ±0.5%

AC Current Sensor Input

Sensor type: Current transformer ACCS-420, ACCS-420-L and ACCS-010

Amperage range: Header selectable ACCS-420/010= 100/150/200A, ACCS-420-L= 10/20/50A

Overload: (continuous) ACCS-420/010= 175/300/400A respectively, ACCS-420-L = 80/120/200A respectively

Output: (Representing 0–100% of full scale input range) ACCS-420(-L)= 4–20mA DC loop powered, ACCS-010= 0–10V DC

Power supply: ACCS-420(-L)= Loop powered, 15–36V DC ACCS-010= Self powered

Accuracy: 1% of full scale

Response time: 250ms (10–90%)

Isolation voltage: 2000V

Frequency: 50–60Hz


Expansion interface: Add 16 relay outputs and 16 digital control inputs with a ZEN-RIO Relay/IO Expansion

HMI interface: For FM1602 Remote Display

Potentiometer Input

Potentiometer input: 3-wire

Excitation voltage: Variable

Potentiometer resistance: <2kω low pot;>2kΩ high pot

Field programmable zero: 0–90% of span

Field programmable span: 0.1–100%

Linearity & repeatability: <±0.05% fso

Response time: 100msec

Ambient drift: <50ppm

Relay Output

Number of relay outputs: 2

LED indication: of each output

Isolation: Isolated

Contact rating: 5A 30V DC

Analog Output (Retransmission)

Number of analog outputs: 2

Analog output type: Isolated 4-20mA analog outputs

Isolation test voltage: 1000V DC for 1min between analog output and digital output

Resolution: 15 bits, 16,000 steps

Compliance voltage: 10V 500Ω

Intelligent Multiplexer

Channel selection: Binary (digital inputs)

Cycle time: 4sec minimum to cycle through all 16 inputs

Resolution: 12 bits, 4000 steps typical

Comm Port(s)

Protocols: Modbus RTU, RS232, RS422 or RS485

Port 1: Select either: RS= RS422 / RS485 OR EMOD= Ethernet Modbus (10/100/Auto)

Port 2: RS232 / RS485 auto-select Selectable baud rate 2400–230000 baud. Format: 8 bit, no parity, 1 stop

Isolation test voltage: 1000V DC for 1min between comms and analog input/output, and between comms and digital input/output

Digital Inputs

Number of digital inputs: 4 x Opto isolated inputs

LED indication: of each digital input

Functions: Status, up counter, up/down counter with direction, debounced counter, frequency, gated frequency

Counter register output: 32 bit

Frequency range: 0–10,000Hz

Input voltage: 5–30V DC

Threshold: 4.6V typical

Debounce counter range: 0–100Hz

Load: At 5V DC= 1.1mA; At 24V DC= 7mA

Isolation test voltage: 1000V DC for 1min between digital input and analog input/output, and between digital input and digital output

Data Logging

Real-time clock:

Data logging: to Micro SD card (supplied). Logging to onboard memory when Micro SD card removed

Micro SD card capacity: 1GB (7,858,683 samples for all channels) Not compatible with higher-capacity Micro SD cards

Onboard memory capacity: 32MB (31,774 samples for all channels) Used when Micro SD card is removed

Datalog retrieval: Fast, simple datalog retrieval and visualization using Define WorkBench


USB programmable: Via USB prog port using Bridge Key USB programmer (sold separately)

Define WorkBench: Simple configuration and data log retrieval using Define WorkBench


Casing: DIN 35 rail mounting; Material: ABS inflammability V0 (UL94)

Dimensions (H x W x D): 2.32 x 10.04 x 5.67″ (59 x 255 x 144mm), with plugs in

Weight: ZEN-LOG-RS = 27.2oz (770g) ZEN-LOG-EMOD = 27.7oz (784g)

Environmental Conditions

Operating temperature: 14 to 140°F (–10 to 60°C)

Storage temperature: –4 to 176°F (–20 to 80°C)

Operating humidity: 5–85% RH max, non-condensing

Environmental Conditions

EN 61326-1: Complies with EN-61326-1:2006

EMC: Emissions EN 558022-A; Immunity EN 50082-1; Safety EN 60950


Zen Datalogger Manual 16V03, 30-Sep-2016 | (4414 KB)
Zen Register Supplement 18V01, 04-Oct-2018 | (3660 KB)
Zen Datalogger Datasheet 16V04, 30-Sep-2016 | (733 KB)


Define WorkBenchDefine WorkBench

Simple software to program your Zen series or edge processing device

Use Define WorkBench to simulate, configure and view data for all Zen series control stations and Nimbus IoT Gateways, including:

With a user-friendly, uncluttered design, WorkBench offers a simple interface for setting up and scaling your unit, as well as retrieving and graphing your datalog.

N.B. Version 3 features Simulation Mode and is only compatible with legacy ZEN-16 firmware 2.0.0 and later.

Define WorkBench

Define CodeLabDefine CodeLab

Flexible macro programming of your Zen series device

Define CodeLab enables you to write and compile a macro using the BASIC programming language, for fully flexible programming of your Zen series device. CodeLab is compatible with all Zen devices, including:

Define CodeLab

Order Codes


Power Supply
-HV 85-265V AC / 95-370V DC
-MV 24-48V AC / 17-72V DC
Port 1
-RS RS422/485
-EMOD Ethernet Modbus


  ZEN-16 Zen Datalogger Zen RTU/U Zen RTU/R
16 Universal Isolated Inputs  
16 Non-Isolated RTD Inputs      
1GB Data Logging    
4 Digital Inputs
2 Analog Outputs    
2 Relay Outputs    
Ethernet Modbus
Easy setup with WorkBench
Zen-RIO expansion option    
HMI Interface    
Universal AC/DC power supply  

All prices are in US Dollars. For pricing in other currencies, please contact us.