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Summary of Contents for Valhalla Scientific 4314Mi
- Page 1 S C I E N T I F I C 4314Mi Wide-Range Digital Igniter Tester Operation Manual Rev 69.1 •• VALHALLA IIIJ...9 ��� © 2023 Valhalla Scientific .. All Rights Reserved.
- Page 3 The warranty period for this instrument is stated on your invoice and packing list. Please refer to these to determine appropriate warranty dates. We will repair the instrument during the warranty period provided it is returned to Valhalla Scientific, Inc. freight prepaid. No other warranty is expressed or implied.
- Page 4 REMOVE POWER and do not use the product until safe operation can be verified by service-trained personnel. If necessary, return the product to Valhalla Scientific for service and repair to ensure that safety features are maintained.
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Page 5: Table Of Contents
Table of Contents Table of Contents ............................ 3 General Information ........................5 Instrument Description ........................5 Instrument Identification ........................5 Unpacking and Installing ........................6 Inspection............................6 Power Requirements ........................... 6 Installation ............................6 Specifications........................... 7 Range/Resolution/Test Current/Failsafe Current ................. 7 Accuracy .............................. - Page 6 Needle Type Probes ........................21 Surface Probes ..........................21 Remote Operations........................22 Safety Isolated RS-232 Interface ......................22 Connecting the 4314Mi via RS232 ....................22 COMMANDS AND SYNTAX ......................23 DETAILS OF COMMAND REFERENCE ....................23 Routine Maintenance ........................28 General .............................
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Page 7: General Information
4314Ki front panel and the battery charge jack located on the 4314Ki back panel. This gives the 4314Mi, an added safety feature that prevents the possibility of having the charging adapter connected while using the instrument for measurements. This is accomplished by the removal of the rear panel charge jack and including its connections to the instruments charging circuits through the 6-pin front panel connector. -
Page 8: Unpacking And Installing
If the unit fails to operate or fails to meet the performance specifications, notify the carrier's agent and the nearest Valhalla Sales Office. Retain the shipping carton for the carrier's inspection. DO NOT return equipment to Valhalla Scientific, Inc., or any of its sales offices prior to obtaining authorization to do so. Power Requirements The Model 4314Mi is powered by four internal rechargeable heavy-duty Nickel–metal hydride (NiMH) -
Page 9: Specifications
3. Specifications This section contains accuracy and operational specifications for the Model 4314Mi. The accuracy specifications are valid for a period of one year from the date of calibration at a temperature of 15°C (59°F) to 35°C (95°F). Outside this range, the temperature coefficient specification applies. -
Page 10: Temperature
Temperature Temperature Coefficient: ±0.002% per °C (from 0°C-15°C and 35°C-50°C) not applicable for 200kΩ range and above. Operating Temperature Range: 0°C to 50°C Storage Temperature Range: -10°C to 70°C General Specifications Display Type: 4 ½ digits OLED (19999) Overload Indication: Screen displays “O.L.”... -
Page 11: Features And Operations
4314Mi. Front Panel The front panel of the 4314Mi can be broken down into 4 parts. In Figure 1 you can see the regions indicated by their name. Figure 1 – 4314Mi Front Panel Callouts... - Page 12 Ohms, kOhms or MOhms. (ohms, kilo-ohms or mega-ohms). Battery Indicator Indicates that the device is in battery mode. Indicates that the device is in battery mode and low battery is detected. Readings should not be trusted. A 16-hour recharge should be performed before using the 4314Mi.
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Page 13: Range Selection Keys
Source and Sense Connections The 4314Mi will include a set of 4 wire alligator clips (AF-K) that will mate with the front panel connector via Mil-Spec MS3116F10-6P. Four of the terminal pins on the front panel receptacle are used as Sense and Source pins providing full 4-Wire Kelvin measurement capability. - Page 14 4-wire principle is used to eliminate lead, wire, and contact resistances as potential error sources. Charger Connections The 4314Mi will include a battery charger that will mate with the front panel connector via Mil-Spec MS3116F10-6P. Two of the terminal pins on the front panel receptacle are used as charger inputs. PIN-C...
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Page 15: Rear Panel
Rear Panel The rear panel of the 4314Mi may vary from unit to unit based on the features installed. If the 4314Mi that you are using features terminals or connectors that are not described in this section, please refer to any available addendum that references the particularities of your model. -
Page 16: Power Up
It is important to note that in the power up (or Standby) state, the 4314Mi will only respond to a keypress, a range select command, or an identification query. -
Page 17: Connecting A Load To The 4314Ki
Connecting a Load to the 4314Ki Connections are made to the front panel terminal using a 4-wire configuration as described in 4-Wire Resistance Measurement. Simply use the provided leads or a lead set terminated in a circular connector MS3116F10-6P, configured as follows. PIN-A Positive Voltage Sense PIN-D... -
Page 18: 4-Wire Resistance Measurement
4-Wire Resistance Measurement The four-wire configuration of the 4314Mi eliminates errors normally caused by test lead and contact resistances. In many applications, the contact resistance can exceed the value of the load by several orders of magnitude. The 4314Mi bypasses this potential error source by providing two terminals of constant current and an additional two terminals for high impedance voltage measurement. - Page 19 For hard-to-reach surfaces, Valhalla Scientific offers two sets of spring-loaded dual needle probes differentiated by overall size and distance between the needles.
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Page 20: Interpreting The Display
Table 3 - Fail-Safe Current Values per Range Every 4314Mi Igniter Testers is thoroughly tested before the leaves the factory. This includes a failsafe test that simulates a "worst case" failure condition. The resulting output current is recorded and provided... -
Page 21: Low Battery Indicator
Low Battery Indicator A standard feature of 4314Mi is circuit monitoring of the internal battery supply output. The Battery Status symbol for this feature is located to the far top/right of the display window. Indicates that the batteries are low. The unit will remain operational for approximately 5 minutes. -
Page 22: Optional Features And Accessories
5. Optional Features and Accessories Each 4314Mi Igniter Tester is shipped with a detachable battery charger (AF-A) and a set of AF-K 4 wire leads. This section lists several items that may be desirable for special applications. Options The 4314Mi comes standard with the Serial Interface. However, if required by the application, this feature can be removed at the factory. -
Page 23: Needle Type Probes
Needle Type Probes AF-MP-1: Kelvin Micro-Probes "AF-MP-1" is a 48-inch shielded 4-wire Kelvin cable set with a 1A test current capacity employing a set of Kelvin Micro-Probes. The probes are equipped with spring-loaded stainless-steel tips with 0.05" spacing. AF-MP-2: Kelvin Mini-Probes "AF-MP-2"... -
Page 24: Remote Operations
The RS232 interface provides a point-to-point connection between two items of equipment such as a computer and the 4314Mi. There are some parameters you need to set on both sides. Once you have set these parameters, you can communicate with the 4314Mi through the RS232 interface. -
Page 25: Commands And Syntax
As there is no signal of end message on RS232 bus, therefore, use LF, CR, or CR/LF as message terminator. After the 4314Mi processes a command, a CR/LF is placed in the output buffer and delivered. As for query command, the return message of the instrument is also added an LF for PC to judge message terminator. - Page 26 Local COMMAND Returns meter to local mode. Syntax: Local<crlf> Returns: <crlf> Power-on default = LOCAL mode Notes: REMOTE mode is selected when the meter receives a valid character (not <crlf>. LogOn COMMAND Turns on continuous reading mode synonymous with “Ohms?”. Note: if the devices is already Logging, the LogOn command will return “Invalid Command”...
- Page 27 LogOn2 COMMAND Turns on continuous reading mode synonymous with “Screen? + RangeV?”. Note: if the device is already Logging, the LogOn2 command will return “Invalid Command” Syntax: LogOn2<crlf> Returns: Screen data + the value of the range every 500ms. Example for 2Ω Range: 1.2345<crlf>2 Example for 20Ω...
- Page 28 2M Ohms Range 20M Ohms Range Reset COMMAND Executes a soft reset of the system. Syntax: Reset<crlf> Response: <crlf> Serial? QUERY Returns the Serial Number of the 4314Mi. Syntax: Serial?<crlf> Response: Serial Number string "69-1234" Example: Serial? "69-1234" SetRange# COMMAND Sets range.
- Page 29 Screen? QUERY Responds with the screen image. Syntax: Screen?<crlf> Returns: Display data formatted exactly to the screen. Example for a 1.1 ohm reading on: 2Ω Range: 1.1000 20Ω Range: 01.100 200Ω Range: 001.10 2kΩ Range: 0001.1 Standby COMMAND Returns meter to Powerup Screen. (No Current Output) Syntax: Standby<crlf>...
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Page 30: Routine Maintenance
Model 4314Mi Digital Igniter Testers. Calibration should be performed on a regular basis to ensure continued instrument accuracy. The recommended calibration interval is 1 year. Required Test Equipment Following is a list of the standard resistors and other equipment required to calibrate the 4314Mi. Precision Resistors: .1Ω ± 0.01% Accuracy 1Ω... -
Page 31: Calibration Procedure
PIN-E Positive Current Source On the main board press the CalSwitch (SW202) tact switch to initiate calibration routine. 4314Mi Procedure: 1. Display will prompt: 2. Press SW202. Display will prompt: 3. Apply 0.000mV to the Voltage Sense and press SW202 on the Main Board. - Page 32 5. Apply -5.0mV and press SW202. Display will prompt: 6. Apply -9.0mV and press SW202. Display will prompt: 7. Apply -75.0mV and press SW202. Display will prompt: Voltage Sense Calibration is complete.
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Page 33: Source Adjustments
SOURCE ADJUSTMENTS 1. Select 200Ω range. 2. Connect to a 100Ω standard resistor. Adjust RV10 for a display reading equal to the value of the resistor. 3. Select 2kΩ range and connect to a 1kΩ standard resistor. Adjust RV11 for a display reading equal to the resistor value. 4. -
Page 34: Checking The Calibration Results
3. Check the display for 0 ± 3 digits Battery Replacement Instructions The rechargeable NiMH battery Pack used in the 4314Mi is very durable and should provide years of trouble-free operation. As with all batteries, a replacement will eventually be necessary. Battery Pack may be ordered from Valhalla Scientific as HDP. -
Page 35: Addendum
If no items follow this page, your manual is complete as printed. For repair and calibration services, call 800-548-9806 or visit valhallascientific.com. Email support available at support@valhallascientific.com 4314Mi Programmable Digital Igniter Tester User Manual Revision 69-1 (2023) Copyright © 2023 Valhalla Scientific, Inc. All rights reserved...
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