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Squirrel SQ800 8ch Data Logger
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Squirrel 400 & 800 Series
모델 Squirrel SQ400 and SQ800은 열전대,또는 써미스타 온도센서외에 전압,전류,여러가지 센서를 연결가능하며, 각각 4채널과 8채널 입력이 가능합니다.
넓은 입력범위와 충분한 저장공간 및 프로그램에 의한 Engneering Unit설정이 가능하여
습도 또는 기타 트랜스미터 입력이 가능합니다
. 휴대하기 편리한 소형경량의 데이타로거
로써 연구용 및 산업용에 적합하며
, 특히 저전력을 소모하므로 전원이 없는 야외에서
1년이상 장기간 구동이 가능합니다.

특징

  • 4채널(SQ-400) 또는 8채널(SQ-800)의 센서입력 데이터를 내부메모리에 저장
  • 전용 컨넥터가 필요없는 유니버설타입 조인트
  • 알카라인 밧데리 또는 220V 전원 아답타 사용가능
  • 알카라인 밧데리 사용시 약 200일 사용가능하며, 잔여시간 표시기능
  • 3개의 버튼으로 채널셋팅 및 내용확인, 로깅 시작/정지 등의 전기능 조정
  • 기본 65,000DATA 저장 가능하며, 선택옵션 추가시 2,000,000DATA 저장가능
  • 프로그램에 의한 단위변환(Engineering Unit) 가능(, m/sec,ppm,%rh...)
  • 절전회로 기본탑재로 장시간 측정가능(밧데리 작동시 약 200일이상 사용가능)
  • 트렌스미터등에 공급되는 sensor power 설정가능
  • 메모리 시간간격 최소 1초에서 최대10시간 설정가능

Standard Features

  • 12bit 분해능
  • 고정도 (측정치의 0.1%, 측정범위의 0.2%).
  • 8채널까지 센서파워 설정가능
  • 1펄스 입력채널
  • 8 event/digital channel
  • 외부신호에 의한 로깅스타트/스톱 설정가능
  • 로거 외부환경조건: -30 to +65`C, 0 to 95%RH.
  • 외부 입력전원: 9 to 14Vdc (9V internal battery included).
  • RS-232C에 의한 자동감지
  • 고속 다운로딩속도 : 19.2 kbit/s.
  • 최다 99개 로깅파일
  • Alphanumeric display of 2 x 16 characters shows readings and status of logger.
  • Size (lxwxh): 180x120x60mm.
  • Darca set-up and download software.
  • Optional alarm features.

Software
Darca+
그랜트 데이타로거 기본 프로그램으로써 채널셋팅 및 로깅데이타 다운로드 및 그래픽 분석가능
데이타를 Excell로 전환 편집 가능
온라인 모드 그래픽 디스플레이 가능
모델 SQ-400,SQ-800 & SQ-1000series 사용 가능
Window 98,2000

Accessories

  • Grant supply a full range including:
  • Weatherproof enclosure / carry case.
  • Tamperproof wall brackets.
  • Test & calibration certificates.
  • Wide range of temperature and humidity sensors.

Squirrel 400 & 800 Series PDF

Squirrel 400 & 800 Series
The Squirrel SQ400 and SQ800 are universal data loggers that reliably and accurately measure inputs from a wide range of sensors making them suitable for many different applications in Industry, Research, Science and Environmental Monitoring. The SQ400 and SQ800 can be used as portable meters, standalone data loggers or as PC based data acquisition systems.

Key Features

  • 4 or 8 Universal inputs avoids application redundancy, saving you money.
  • Direct connection of thermocouples, voltage, 4 to 20mA current, and thermistors.
  • Battery or mains operated and easily portable.
  • Simple 3 button set-up via built in display or from PC with free Darca Software.
  • Non-volatile memory provides up to 2 million eadings of secure data.
  • Time and date reported with each reading.
  • Readings can be scaled into meaningful engineering units (e.g. m/sec, ppm).
  • Low power consumption for long term unattended use or portable operation.
  • Sensor connection is via removable screw terminals for ease of use in the field.
  • Remote set-up and download via GSM, PSTN, radio or satellite modem links for et & forget?applications.
  • Ethernet option allows loggers to be sited anywhere you have a network port, making installation easier and more cost effective.

Standard Features

  • 12bit resolution.
  • Highly accurate ?0.1% of reading, +0.2% of range span).
  • Up to 8 sensor power outputs.
  • 1 pulse count channel.
  • 8 event/digital channels.
  • External triggers can start and stop the logger.
  • Environmental operation: -30 to +65, 0 to 95%RH.
  • External power supply: 9 to 14Vdc (9V internal battery included).
  • Communications via RS232C with auto-baud detect.
  • Rapid memory download at 19.2 kbit/s.
  • Up to 99 logger 'runs' may be stored.
  • Alphanumeric display of 2 x 16 characters shows readings and status of logger.
  • Small size (lxwxh): 180x120x60mm.
  • Darca set-up and download software.
  • Optional alarm features.

Software
Darca+
Powerful and easy to use spreadsheet style software for configuring, downloading, displaying and analysing data from your SQ400 or SQ800 data logger. Upgrade from Darca and with just a few mouse clicks you will quickly be able to view real time charts and historical data. Darca+ allows you to display over 16 channels of data, manual and automatic scaling of charts, list readings in tabular format with date and time. Modem connection and scheduler is also supported for automated downloading.

Accessories

  • Grant supply a full range including:
  • Weatherproof enclosure / carry case.
  • Tamperproof wall brackets.
  • Test & calibration certificates.
  • Wide range of temperature and humidity sensors.

Squirrel 400 & 800 Series PDF

Squirrel 450/850 Series Data Logger

451 / 452 Model Squirrel Datalogger

451 / 452
Squirrel Data Logger

The Squirrel 450/850 series is a cost effective portable data logger with a maximum of 4 or 8 inputs. In common with its bigger brother, the Squirrel 1000 series data logger, the 450 and 850 series are equipped with impressive specifications, long battery life and a three year guarantee. The model 451 and 451 T are universal instruments with configurable inputs for voltage, current and temperature for both thermocouple and thermistor sensors. The model 851 is the 8 input version of the 451.

The 450/850 Series Range Of Models

The current 450/850 series consists of the following models, each offers a wide variety of user applications:

Model Inputs Features
451
851
4 channels
8 channels
Each channel configurable for temperature, voltage or current input
451T 4 channels 0.1sec Interval (Fast Recording feature)
451pH 4 channels Supports up to 2 x external pH adaptor module type pH IFU(purchased separately).
451MC 4 channels PCMCIA memory slot installed to accept SRAM card (purchase separately)
452 4 Pulse only channels See CPU module
453 8 Event + 8 Pulse inputs (5Hz) for slow counting  
454 8 Event Uses standard rising cage connectors for easy connection.
401 4 channels 'Blind' 451 - less display and control panel

Factory installed Options

Pulse input
The 451/851 only is available with:

  • Two pulse inputs

pH adaptor module type (pH IFU )

  • For use only with the 451MC

PCMCIA Card Slot

As an option, the data logger can be fitted with a slot for an SRAM memory card. The data logger can record directly onto the card or the user can copy the internal memory to the card for easy transfer of the data to a computer equipped with a PC card slot. SRAM cards are available for storing up to 2M readings. Darca Software includes tools for setting up the card and transferring the data from the card to a file suitable for analysis or translation to ASCII format using any of the standard software.

We recommend using King Max, Panasonic or Mitsubishi cards as these have the lowest power consumption. Note: we have found that not all SRAM cards are suitable, particularly those with rechargeable batteries and that some older versions have unacceptably high power consumption when used with Squirrel - especially when battery powered. Refer to Accessories for the SRAM details.

Field installed options

The memory can be expanded to 2M readings (about 2,080,000). Refer to the Options section for details.

Don't forget that a lot of memory takes time to download and that it is possible to reduce the amount of memory used for a logging run. Eltek loggers now download at 38400 baud, and in practice this is about 500 readings per second.

Common Features

All models feature panel mounted controls (except the 401) and a 2 line, 32 character LCD readout for setting up, monitoring and reading recorded events on the logger. Resolution is 12 bit with standard thermistor, thermocouple and DC voltage or current inputs. Two sensor power outputs are available to power external sensors - such as humidity probes.

EU Range
In addition "EU" range is standard, enabling the logger to independently rescale each input to a user defined engineering unit, e.g. humidity can be displayed as 0 to 100% RH, permitting quick and unambiguous understanding of the readings on the display.

Internal memory
The logger is fitted as standard with 250K of memory, backed up by a lithium battery, and at least 250,000 locations are available for data storage. Note that this refers to data storage, not bytes, as 2 bytes of conventional memory are used for every reading. Larger memory can be field fitted by a competent engineer as an option.

Accessories

The Squirrel 450/850 series shares many of the accessories available to the Squirrel 1000 series datalogger. The most significant exceptions are noted.

Software

The 450/850 series is fully compatible with the Eltek Darca Lite and Darca Plus software, providing comprehensive remote control, data transfer and analysis tools using a Windows based PC.

Connection to the PC can be:

  • Direct - use the LC68 computer cable.
  • Remote - via a landline - use a commercially available modem (use only Darca Plus software).
  • Remote - via a cellular network - use the GSM modem kit type GSM-mdm c/w antenna.
  • Remote - via Ethernet - for networked Squirrel dataloggers use the Moxa De311 serial to ethernet convertor.
  • Specification

    Accuracy (at 20ºC) Voltage/Current:
    Temperature:
    ±0.1% of reading ±0.1% of span
    ±0.1% of reading ±0.1% of span
    Environment Ambient temperature: -30ºC to 65ºC
    Humidity up to 95% (non condensing)
    Power Supplies Internal: Six AA manganese alkaline batteries (9V nominal)
    External: 9-14V DC at 100mA.
    Battery Life At least 6 months with all channels recording every 5 minutes
    Clock Accuracy 1 second/day at 20ºC
    Physical details Dimensions (mm): H 120, W 180, D 62
    Weight, inc batteries: Approximately 1Kg
    Material: ABS coated with durable NEXTEL finish
    Interface RS232C at up to 38,400 Baud
    Connectors RS232 Output:
    Inputs:
    6 pin female mini-DIN
    3 pin ST Plug (5mm pitch "screw Terminal")
    Input impedance Voltage and Thermocouple: 1M Ohms
    Current: 10 Ohms
    Sensor power outputs Internally selectable to 5V regulated or Squirrel supply voltage.

    Ranges

    Input type Available ranges Resolution
    Thermistor -50 to 150ºC 0.1C
    Thermocouple - Type K 0 to 900ºC 0.5C
    Thermocouple - Type K -200 to 450ºC 0.2C
    Thermocouple - Type T -200 to 350ºC 0.2C
    Voltage 0 to 50mV 50µV
    0 to 100mV 50µV
    0 to 200mV 50µV
    0 to 500mV 0.5mV
    0 to 1V 0.5mV
    0 to 2V 0.5mV
    0 to 5V 5mV
    0 to 10V 5mV
    0 to 20V 5mV
    -25 to 25mV 50µV
    -50 to 50mV 50µV
    -100 to100mV 50µV
    -250 to 250mV 0.5mV
    -500 to 500mV 0.5mV
    -1 to 1V 0.5mV
    -2.5 to 2.5V 5mV
    -5 to 5V 5mV
    -10 to 10V 5mV
    Current 4 to 20mA 0.05%
    0 to 20mA 5µA

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