Scientific Accessories

Description

This tailor made dust cover is for the range of experiments mounted in the universal frame. One free cover is supplied with each  frame. Replacements are available if required.

• keeps apparatus free from dust

• Safe storage for weights and hangers
• Very mobile
• Very strong
• Holds up to 1600 N of laboratory
  weights
• 3 year warranty

Description

A welded steel framed trolley with five front shelves and one rear shelf. All four wheels are castored for ease of moving. Provision is also made for attaching weight hangers to a bar at the back. There is shelf space for a general set of laboratory weights up to 1600 N in total.

• Comprehensive set of weights.
• Rounded Newton values.
• 3 year warranty.

Description

A set of cast iron weights from 50 N to 0.5 N and pressed steel weights for 0.2 and 0.1 N values. The cast iron weights are individually adjusted to be within specification. All weights have a slot so that they can be placed on a load hanger. For sizes see the separate data sheet. The collection of weights offered comprises :

• 6 x 100 N
• 8 x 50 N
• 10 x 20 N
• 16 x 10 N
• 20 x 5 N
• 20 x 2 N
• 10 x 1 N
• 10 x 0.5 N
• 10 x 0.2 N
• 10 x 0.1 N

• Lightweight proving ring for accurate
  loads
• Screw jack provides 75 mm travel
• Compressive or tensile loading
• Direct read out of true load
• Replaces cast iron masses
• Universal - can be used for student
  projects
• 3 year warranty

Description

The loading device uses a screw jack with a fine thread and 75 mm travel to apply load through a proving ring. The ring deflection causes a digital dial gauge to indicate the load in decaNewtons because a innovation compensates for the variations of the ring. The gauge also has a zero setting switch so all the effects of self weight and initial set up of an experiment can be eliminated. The ring is designed to be used in compression but a loading yoke is provided to enable tension loads to be applied. Not only is the ring usable for HI-PLAN experiments to avoid using cast iron weights, but it is even more adaptable for student projects where large and accurate loads in any direction are required.

• Free standing "wall".
• Saves or provides wall space.
• Improves laboratory layout.
• Two-sided for experiments.
• No bench space needed.

Description

A vertical steel post 1.65 m high attached to a 650 x 450 mm base plate with adjustable feet. A roughly triangular cross frame, which accepts fixing bolts up to 12 mm at centers between 60 and 400 mm, is fixed at 1.65 or 1.04 m height. A work table can be added at an intermediate position. A duplicate cross frame and work table can be added to the opposite side of the post for two sided working to make better use of the laboratory.

Services Required

• Optional Extras - Ancillaries 
• Duplicate Cross Frame
• Work Table

• Self contained portable meter
• Direct reading of strain or force
• 5 digit Liquid Crystal Display, (LCD),
  indicates 20,000 micro strain or
  Newtons x 1 N
• Half or Full Bridge operation with 1, 2 or 4
  active gauges
• Individual calibration and tare zero for
  each channel
• Rechargeable, environmentally friendly
  nickel metal hydride battery and universal
  power supply operation
• Dynamic strain output on one channel
• Expandable to 18 inputs
• Three year warranty

Applications

1. Energizing electrical resistance strain gauges in all configurations and analysing the bridge output for direct read-out on a digital meter
2. For use with strain gauged force transducers
3. To measure the frequency and amplitude of dynamic actions

Description

The strain gauge meter is a rugged direct reading instrument capable of measuring up to 20,000 micro strain with a resolution of 1 digit. It has two channels and can be used with any standard foil gauges in Half or Full Bridge circuits and either 1, 2 or 4 active gauges including gauges on force transducers. Each channel has a simple calibration and zeroing (tare) system. Both channels have DC excitation for static work, while one can alternatively provides an analogue output for dynamic work up to at least 10 Hz. It comes complete with two Half Bridge connecting cables.

The instrument is mains operated with a rechargeable Ni-MH battery so it can be used for field work away from a power source. Low power consumption allows at least 8 hours use.

By adding the 16 Channel Expansion Unit the meter becomes an 18 channel unit but still with individual calibration and Tare on each channel automatically called up when the channels are selected.

Services Required 

12 V Electrical supply for running on line or charging battery pack, Single Phase 100 / 240 V AC - 50 / 60 Hz.

• Low cost multi-channel strain
  measurement.
• Individual channel calibration and tare
• Half or full bridge operation.
• Used with the HAC 20 Two Channel.
  Digital Strain Gauge Meter - No extra
  power supply required.
• Three year warranty.

Applications

1. Converts the Strain Gauge Meter into an eighteen channel system.

Description

This high quality switch unit accepts sixteen inputs and selects any one for an output to the two channel strain gauge meter. The output identifies the channel to call up its per-programmed calibration and zeroing (tare) status. It is powered from the  unit.

Services Required 

Requires Two Channel Digital Strain Meter for power

Optional Extras - Ancillaries

• Half Bridge Connecting Cable.
• Full Bridge Connecting Cable.

• Combined digital processing.
• Wide range of scan speeds and input frequencies.
• Slow phenomena may be displayed.
• Suitable for analysis and comparison of recorded data.
• 17 automatic measurements may be
  taken.
• Link provided.
• Three year warranty.

Description

The power of combined digital processing enables the user to display and store events prior to triggering and therefore analyse the causes of a phenomenon, over a wide range of scan speeds and input frequencies. Very slow phenomena, (such as temperature variations, battery charges, very low frequencies etc), may be displayed. After acquisition, recorded data may be compared and analysed.

The 'ENVELOPE' mode, for storing the minimum and maximum values of several successive acquisition operations, enables a large number of events to be displayed. The 'GLICH' mode provides for capture of 'parasites'.

As the  link is a standard feature, users can take advantage of the possibilities offered by digital techniques: analysis and processing on PC by the addition of software for direct screen printout to printer. (Software to be ordered separately not supplied as standard.

.

Specifications

Services Required

Depending on the strain gauge meter used, an electrical supply, single phase 220 / 240 V AC - 50 Hz, 110 / 120 V AC - 60 Hz, to be specified on order, may be needed

• Metric Model
• Ball Point
• Lug on back
• Manufacturer's 1 year warranty

Description

Metric dial indicator 56 mm nominal size reading 0.01 mm per division over the specified travel.

Optional Extras - Ancillaries

1. Dial Gauge Stand with Magnetic Base
   
2. Dial Gauge Stand for Hi-Plan Frames
   
3. Flat Anvil
   
4.  Dial Gauge Stand with Large Magnetic Base

• Metric or Inch.
• Large LCD display.
• Zero setting.
• Direction Change On/Off Switch.
• Data output.
• Manufacturer's 1 year warranty.

Description

Electronic digital indicator of 60 mm nominal size with resolution and range as specified. The zero can be set anywhere in the range, while the + and - directions can be selected. A data output system is available.

Optional Extras - Ancillaries

1. Dial Gauge Stand with Magnetic Base.
   
2. Dial Gauge Stand for Hi-Plan Frames.
   
3. Flat Anvil.
   
4. Dial Gauge Stand with Large Magnetic Base.

• Load or Force Units.
• Simple Newton values.
• Stack able on Load Hangers.
• Individually Calibrated.
• 3 year warranty.

Description

The range of weights is based on the 1:2:5 system which makes it easy to create any load from 0.1 N to 200 N plus by increments of 0.1 N. All the weights are slotted so that they stack on a load hanger. The 0.1 and 0.2 N weights are in pressed steel, while all the rest are cast iron. The cast iron weights are individually corrected to be within ± 0.5 %. The weights are marked with their value to identify them

• Steel Hangers in a range of sizes.
• Weights are in Newtons.
• 3 year warranty.

Description

The weight hangers consist of a length of vertical stem with a hook at the top and a small platform at the bottom. To help in assessing total loads each size of hanger has a rounded Newton value consistent with its size. They are made of steel with a powder coat green hammer finish.