Specifications
13
SmartReader Plus 8
FEATURES
• Eight channels
• Monitor temperature
in eight different loca-
tions
• Use with a variety of
different temperature
probes:
- General purpose
- High temperature
- Low temperature
- Waterproof temperature
- Oven temperature
- Skin surface temperature
- Pipe surface temperature
Eight-Channel Temperature (Thermistor) Data Logger 
The SmartReader Plus 8 data logger can measure temperature in eight different
locations  simultaneously  using  ACR’s  ET  series  thermistor  probes.    Monitor
and record high temperature, low temperature, pipe surface, skin surface, or a
variety of other temperatures.
PRODUCT SPECIFICATIONS
No. of Channels:
Eight - One for ambient temperature
- Seven for temperature (with thermistors), 
resistance, or switch status 
Memory Sizes:
32 KB, 128 KB and 1.5 MB
Common Specifications:
See page 6
Software Specifications:
See page 34
Remote & Network Communications:
See page 38
Accessories:
ACR ET Series Temperature Probes or any NTC 
thermistor probe
Order Information
MODEL MEMORY  CATALOG #
SRP-008 32 KB 01-0015
SRP-008-128K 128 KB 01-0129
SRP-008-1.5M 1.5 MB 01-0158
SmartReader Plus 9
Two-Channel Pulse Data Logger
The SmartReader Plus 9 is a versatile data  logger designed for easy counting
and recording of digital pulses or switch contact closures.  It has two pulse/con-
tact  input  channels.    Data  can  be  displayed  in  custom  engineering  units
using the simple equation editor of ACR’s TrendReader
®
Standard software.
Order Information
MODEL MEMORY  CATALOG #
SRP-009 32 KB 01-0016
SRP-009-128K 128 KB 01-0130
PRODUCT SPECIFICATIONS
No. of Channels:
Two  -  Two for externally-generated pulse signals and 
dry switch contact closures
Pulse Inputs:
Range: 4095 pulses/sample period
Accuracy: +/- 1 pulse/sample period
Max Voltage:  +24/-22 volts DC
Input Impedance: > 1.0 M ohm for Vin < 5V
> 4.0 K ohm for Vin > 5V
Min. Pulse Wide
50% Duty Cycle: Slow input: 2 milliseconds
Fast input: 10 microseconds
Voltage Inputs:
Input type: Active logic signals
Input voltage: Low = 0 to 0.5 volts DC
High =  4.5 to 24 volts DC
Switch Inputs:
Input Type: Uncommitted “dry” contacts (relay or 
switch)
Excitation:  5 microamps contact current 
3.6 volts open circuit
Contacts: Sealed gold-plated recommended
Maximum Frequency:
100 KHz
Memory Size:
32 KB and 128 KB
Common Specifications:
See page 6
Software Specifications:
See page 34
Remote & Network Communications:
See page 38
FEATURES
• Two channels
• Count digital pulses
or dry switch con-
tact closures (i.e.
on/off, open/close) 
• Select slow or fast
input
• Count up to 4095
pulses per sample
period










